{"id":25835,"date":"2026-08-02T03:29:35","date_gmt":"2026-08-01T18:29:35","guid":{"rendered":"https:\/\/genai-ai.co.jp\/ai-kanri\/?p=25835"},"modified":"2026-08-08T15:24:53","modified_gmt":"2026-08-08T06:24:53","slug":"css-class-basics","status":"publish","type":"post","link":"https:\/\/genai-ai.co.jp\/ai-kanri\/blog\/css-class-basics\/","title":{"rendered":"\u30102026\u5e748\u6708\u6700\u65b0\u3011CSS\u306eclass\u3068\u306f\uff1f\u57fa\u672c\u306e\u4f7f\u3044\u65b9\u30fb\u547d\u540d\u898f\u5247\u304b\u3089Claude Code\u306b\u3088\u308b\u81ea\u52d5\u751f\u6210\u307e\u3067\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"\n<style>\n.g-flow-row{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;}\n.g-flow-item{background:linear-gradient(135deg,#1a1a1a,#2a1015);color:#fff;border-radius:8px;padding:16px 14px;min-width:130px;flex:1;text-align:center;}\n.g-flow-arrow{color:#dc2626;font-size:20px;font-weight:700;}\n.g-card-row{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 32px;}\n.g-card-row>div{flex:1;min-width:220px;}\n@media(max-width:600px){\n  .g-flow-row{flex-direction:column;}\n  .g-flow-arrow{transform:rotate(90deg);}\n  .g-card-row{flex-direction:column;}\n  .g-card-row>div{min-width:100%;}\n}\n<\/style>\n\n\n\n<div style=\"margin:0 0 32px;\">\n  <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/08\/thumb-css-class-basics.jpg\" alt=\"\u30102026\u5e748\u6708\u6700\u65b0\u3011CSS\u306eclass\u3068\u306f\uff1f\u57fa\u672c\u306e\u4f7f\u3044\u65b9\u30fb\u547d\u540d\u898f\u5247\u304b\u3089Claude Code\u306b\u3088\u308b\u81ea\u52d5\u751f\u6210\u307e\u3067\u5fb9\u5e95\u89e3\u8aac\" style=\"width:100%;height:auto;border-radius:12px;display:block;\">\n<\/div>\n\n\n\n\n\n\n\n<p class=\"wp-block-paragraph\">\u300cclass\u3063\u3066\u7d50\u5c40\u4f55\u306a\u306e\uff1f\u300d\u300cid\u3068\u4f55\u304c\u9055\u3046\u306e\uff1f\u300d\u2014\u2014HTML\u3084CSS\u3092\u5b66\u3073\u59cb\u3081\u305f\u4eba\u304c\u3001\u5fc5\u305a\u4e00\u5ea6\u306f\u3064\u307e\u305a\u304f\u306e\u304c\u3053\u306e<strong>class\u5c5e\u6027<\/strong>\u306e\u7406\u89e3\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class\u306fCSS\u3067\u30c7\u30b6\u30a4\u30f3\u3092\u5f53\u3066\u308b\u3068\u304d\u306e\u6700\u3082\u57fa\u672c\u7684\u306a\"\u76ee\u5370\"\u3067\u3059\u304c\u3001\u66f8\u304d\u65b9\u3092\u96d1\u306b\u899a\u3048\u3066\u3057\u307e\u3046\u3068\u3001\u5f8c\u304b\u3089\u30b3\u30fc\u30c9\u304c\u8907\u96d1\u306b\u306a\u3063\u305f\u3068\u304d\u306b<strong>\u300c\u3069\u306eclass\u304c\u3069\u3053\u306b\u52b9\u3044\u3066\u3044\u308b\u304b\u5206\u304b\u3089\u306a\u3044\u300d<\/strong>\u3068\u3044\u3046\u4e8b\u6545\u304c\u983b\u767a\u3057\u307e\u3059\u3002\u9006\u306b\u8a00\u3048\u3070\u3001class\u306e\u4ed5\u7d44\u307f\u3068\u547d\u540d\u898f\u5247\u3092\u6b63\u3057\u304f\u7406\u89e3\u3057\u3066\u304a\u304f\u3060\u3051\u3067\u3001CSS\u8a2d\u8a08\u306e8\u5272\u306f\u89e3\u6c7a\u3059\u308b\u3068\u8a00\u3063\u3066\u3082\u904e\u8a00\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001class\u306e\u57fa\u790e\u304b\u3089id\u5c5e\u6027\u3068\u306e\u9055\u3044\u3001CSS\u30bb\u30ec\u30af\u30bf\u306e\u512a\u5148\u9806\u4f4d\u3001BEM\u306a\u3069\u5b9f\u52d9\u3067\u4f7f\u308f\u308c\u308b\u547d\u540d\u898f\u5247\u307e\u3067\u3092\u4f53\u7cfb\u7684\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u5f8c\u534a\u3067\u306f\u3001<strong>\u5f0a\u793e\uff08\u682a\u5f0f\u4f1a\u793eGENAI\uff09\u304cClaude Code\u3092\u4f7f\u3063\u3066HTML\/CSS\u5236\u4f5c\u3092\u3069\u3053\u307e\u3067\u52b9\u7387\u5316\u3057\u3066\u3044\u308b\u304b<\/strong>\u3068\u3044\u3046\u5b9f\u904b\u7528\u30c7\u30fc\u30bf\u3082\u516c\u958b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">CSS\u306eclass\u306f\u300c\u77e5\u3063\u3066\u3044\u308c\u3070\u5f53\u305f\u308a\u524d\u300d\u300c\u77e5\u3089\u306a\u3044\u3068\u6cbc\u306b\u30cf\u30de\u308b\u300d\u5178\u578b\u7684\u306a\u57fa\u790e\u77e5\u8b58\u3067\u3059\u3002\u79c1\u81ea\u8eab\u3001\u7d4c\u55b6\u8005\u3068\u3057\u3066\u30b3\u30fc\u30c9\u3092\u66f8\u304b\u306a\u304f\u306a\u3063\u305f\u4eca\u3067\u3082\u3001Claude Code\u306b\u6307\u793a\u3092\u51fa\u3059\u3068\u304d\u306bclass\u306e\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3067\u3001\u51fa\u3066\u304f\u308b\u6210\u679c\u7269\u306e\u7cbe\u5ea6\u304c\u307e\u3063\u305f\u304f\u5909\u308f\u308b\u3068\u611f\u3058\u3066\u3044\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u4eca\u65e5\u306f\u300cclass\u3068\u306f\u4f55\u304b\u300d\u3092\u4e38\u6697\u8a18\u3067\u306f\u306a\u304f\u3001\u306a\u305c\u305d\u306e\u4ed5\u7d44\u307f\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u304b\u3068\u3044\u3046\u7406\u5c48\u304b\u3089\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u6574\u7406\u3057\u307e\u3059\u3002\u6700\u5f8c\u307e\u3067\u8aad\u3081\u3070\u3001\u81ea\u5206\u3067\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u4eba\u306f\u3082\u3061\u308d\u3093\u3001AI\u306b\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u4efb\u305b\u308b\u4eba\u306b\u3082\u5f79\u7acb\u3064\u77e5\u8b58\u304c\u8eab\u306b\u3064\u304d\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3092\u6700\u5f8c\u307e\u3067\u8aad\u3080\u3068\u3001\u6b21\u306e6\u3064\u304c\u660e\u78ba\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>class\u5c5e\u6027<\/strong>\u306e\u6b63\u3057\u3044\u610f\u5473\u3068\u3001<strong>id\u5c5e\u6027<\/strong>\u3068\u306e\u6c7a\u5b9a\u7684\u306a\u9055\u3044<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>HTML\u3067class\u3092\u4ed8\u4e0e\u3059\u308b\u5177\u4f53\u7684\u306a\u66f8\u304d\u65b9\u3068\u3001\u8907\u6570\u6307\u5b9a\u306e\u30eb\u30fc\u30eb<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>CSS\u30bb\u30ec\u30af\u30bf\u306e<strong>\u512a\u5148\u9806\u4f4d\uff08\u8a73\u7d30\u5ea6\uff09<\/strong>\u306e\u4ed5\u7d44\u307f<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>BEM\u30fbOOCSS\u30fbUtility-first<\/strong>\u306a\u3069\u5b9f\u52d9\u3067\u4f7f\u308f\u308c\u308bclass\u8a2d\u8a08\u624b\u6cd5<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u5f0a\u793eGENAI\u306e\u5b9f\u904b\u7528\u30c7\u30fc\u30bf<\/strong>\u3068\u3001\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u696d\u52d9\u306e\u524a\u6e1b\u6642\u9593<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>Claude Code\u3092\u4f7f\u3063\u3066<strong>\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u3082class\u8a2d\u8a08\u3092\u4e38\u3054\u3068\u4efb\u305b\u308b<\/strong>\u65b9\u6cd5<\/span><\/div>\n\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=css-class-basics&#038;blog_slug=css-class-basics\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=css-class-basics&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-01\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">01<\/span>\n  <span class=\"section-label\" style=\"display:block;\">WHAT IS CLASS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">class\u3068\u306f\u4f55\u304b\uff1fid\u5c5e\u6027\u3068\u306e\u9055\u3044<\/span>\n  <span class=\"section-desc\">HTML\u306e\u57fa\u790e\u5c5e\u6027\u3092\u3001\u4ed5\u7d44\u307f\u304b\u3089\u7406\u89e3\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>class\u5c5e\u6027<\/strong>\u3068\u306f\u3001HTML\u306e\u8981\u7d20\uff08\u30bf\u30b0\uff09\u306b\u300c\u540d\u524d\uff08\u5206\u985e\u30e9\u30d9\u30eb\uff09\u300d\u3092\u3064\u3051\u308b\u305f\u3081\u306e\u5c5e\u6027\u3067\u3059\u3002CSS\u3084JavaScript\u304b\u3089\u3001\u305d\u306e\u540d\u524d\u3092\u76ee\u5370\u306b\u3057\u3066\u7279\u5b9a\u306e\u8981\u7d20\u3060\u3051\u3092\u9078\u3073\u51fa\u3057\u3001\u30c7\u30b6\u30a4\u30f3\u3092\u5f53\u3066\u305f\u308a\u52d5\u304d\u3092\u3064\u3051\u305f\u308a\u3059\u308b\u305f\u3081\u306b\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3068\u3048\u3070\u300c\u898b\u51fa\u3057\u306e\u8272\u3092\u8d64\u304f\u3057\u305f\u3044\u300d\u300c\u3053\u306e\u30dc\u30bf\u30f3\u3060\u3051\u89d2\u4e38\u306b\u3057\u305f\u3044\u300d\u3068\u3044\u3063\u305f\u5834\u5408\u3001\u5bfe\u8c61\u306e\u8981\u7d20\u306b<code>class=\"\u898b\u51fa\u3057\"<\/code>\u306e\u3088\u3046\u306a\u30e9\u30d9\u30eb\u3092\u8cbc\u3063\u3066\u304a\u304d\u3001CSS\u5074\u3067\u305d\u306e\u30e9\u30d9\u30eb\u3092\u6307\u5b9a\u3057\u3066\u30b9\u30bf\u30a4\u30eb\u3092\u66f8\u304f\u3001\u3068\u3044\u3046\u6d41\u308c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre style=\"background:#1a1a1a;color:#f1f1f1;border-radius:8px;padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.7;margin:16px 0;\"><code>&lt;h2 class=\"section-title\"&gt;\u304a\u77e5\u3089\u305b&lt;\/h2&gt;\n&lt;p class=\"section-title\"&gt;\u6700\u65b0\u60c5\u5831\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059&lt;\/p&gt;<\/code><\/pre>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>class\u5c5e\u6027<\/strong>\uff1aHTML\u8981\u7d20\u306b\u300c\u5206\u985e\u540d\u300d\u3092\u4ed8\u3051\u308b\u305f\u3081\u306e\u5c5e\u6027\u3002\u540c\u3058class\u540d\u3092\u8907\u6570\u306e\u8981\u7d20\u306b\u4ed8\u4e0e\u3067\u304d\u3001CSS\u3084JavaScript\u304b\u3089\u4e00\u62ec\u3067\u9078\u629e\u30fb\u64cd\u4f5c\u3059\u308b\u305f\u3081\u306b\u4f7f\u3046\u3002\u5c5e\u6027\u5024\u306f\u534a\u89d2\u30b9\u30da\u30fc\u30b9\u533a\u5207\u308a\u3067\u8907\u6570\u6307\u5b9a\u3067\u304d\u308b\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">1-1. id\u5c5e\u6027\u3068\u306e\u9055\u3044\uff08\u6700\u91cd\u8981\u30dd\u30a4\u30f3\u30c8\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">class\u3068\u3088\u304f\u6df7\u540c\u3055\u308c\u308b\u306e\u304c<strong>id\u5c5e\u6027<\/strong>\u3067\u3059\u3002\u4e21\u8005\u306e\u9055\u3044\u3092\u4e00\u8a00\u3067\u307e\u3068\u3081\u308b\u3068\u3001<strong>\u300cclass\u306f\u4f55\u5ea6\u3067\u3082\u4f7f\u3044\u56de\u305b\u308b\u300d\u300cid\u306f\u30da\u30fc\u30b8\u5185\u3067\u4e00\u5ea6\u3057\u304b\u4f7f\u3048\u306a\u3044\u300d<\/strong>\u3068\u3044\u3046\u70b9\u306b\u5c3d\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u9805\u76ee<\/th><th>class\u5c5e\u6027<\/th><th>id\u5c5e\u6027<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>1\u30da\u30fc\u30b8\u5185\u3067\u306e\u4f7f\u7528\u56de\u6570<\/td><td>\u4f55\u5ea6\u3067\u3082\u4f7f\u3048\u308b\uff08\u8907\u6570\u8981\u7d20\u306b\u540c\u3058\u540d\u524dOK\uff09<\/td><td>1\u30da\u30fc\u30b8\u306b1\u56de\u3060\u3051\uff08\u4e00\u610f\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\uff09<\/td><\/tr>\n<tr><td>1\u3064\u306e\u8981\u7d20\u3078\u306e\u8907\u6570\u6307\u5b9a<\/td><td>\u53ef\u80fd\uff08\u534a\u89d2\u30b9\u30da\u30fc\u30b9\u533a\u5207\u308a\uff09<\/td><td>\u4e0d\u53ef\uff081\u8981\u7d20\u306b1\u3064\u306e\u5024\u306e\u307f\uff09<\/td><\/tr>\n<tr><td>CSS\u30bb\u30ec\u30af\u30bf\u3067\u306e\u66f8\u304d\u65b9<\/td><td><code>.\u30af\u30e9\u30b9\u540d<\/code>\uff08\u30c9\u30c3\u30c8\uff09<\/td><td><code>#ID\u540d<\/code>\uff08\u30b7\u30e3\u30fc\u30d7\uff09<\/td><\/tr>\n<tr><td>CSS\u306e\u512a\u5148\u9806\u4f4d\uff08\u8a73\u7d30\u5ea6\uff09<\/td><td>\u4f4e\u3044<\/td><td>class\u3088\u308a\u9ad8\u3044<\/td><\/tr>\n<tr><td>\u4e3b\u306a\u7528\u9014<\/td><td>\u30c7\u30b6\u30a4\u30f3\u306e\u4f7f\u3044\u56de\u3057\u30fb\u30d1\u30bf\u30fc\u30f3\u5316<\/td><td>\u30da\u30fc\u30b8\u5185\u30ea\u30f3\u30af\u306e\u30a2\u30f3\u30ab\u30fc\u3001JS\u5236\u5fa1\u306e\u4e00\u610f\u306a\u5bfe\u8c61\u6307\u5b9a<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>id\u5c5e\u6027<\/strong>\uff1aHTML\u8981\u7d20\u306b\u300c\u4e00\u610f\uff08\u30e6\u30cb\u30fc\u30af\uff09\u306a\u8b58\u5225\u5b50\u300d\u3092\u4ed8\u3051\u308b\u5c5e\u6027\u3002\u30da\u30fc\u30b8\u5185\u3067\u540c\u3058id\u5024\u3092\u8907\u6570\u306e\u8981\u7d20\u306b\u4ed8\u3051\u3066\u306f\u3044\u3051\u306a\u3044\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u3042\u308b\u3002\u30da\u30fc\u30b8\u5185\u30ea\u30f3\u30af\u306e\u98db\u3073\u5148\uff08\u30a2\u30f3\u30ab\u30fc\uff09\u3084\u3001JavaScript\u30671\u3064\u306e\u8981\u7d20\u3060\u3051\u3092\u30d4\u30f3\u30dd\u30a4\u30f3\u30c8\u306b\u64cd\u4f5c\u3057\u305f\u3044\u3068\u304d\u306b\u4f7f\u3046\u3002<\/p>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u52d9\u4e0a\u306e\u76ee\u5b89\u3068\u3057\u3066\u306f\u3001\u300c\u540c\u3058\u30c7\u30b6\u30a4\u30f3\u3092\u8907\u6570\u7b87\u6240\u3067\u4f7f\u3044\u56de\u3057\u305f\u3044\u306a\u3089class\u300d\u300c\u305d\u306e\u30da\u30fc\u30b8\u306e\u4e2d\u3067\u7d76\u5bfe\u306b1\u3064\u3057\u304b\u306a\u3044\u8981\u7d20\u3092\u6307\u3059\u306a\u3089id\u300d\u3068\u899a\u3048\u3066\u304a\u3051\u3070\u3001\u307e\u305a\u8ff7\u3046\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30dc\u30bf\u30f3\u30fb\u30ab\u30fc\u30c9\u30fb\u898b\u51fa\u3057\u3068\u3044\u3063\u305f<strong>\u7e70\u308a\u8fd4\u3057\u767b\u5834\u3059\u308b\u30d1\u30fc\u30c4\u306f\u307b\u307c100%class<\/strong>\u3067\u8a2d\u8a08\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:20px;\">&#9888;&#65039;<\/span>\n    <strong style=\"color:#dc2626;font-size:16px;\">\u3088\u304f\u3042\u308b\u9593\u9055\u3044<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u30c7\u30b6\u30a4\u30f3\u3092\u5f53\u3066\u308b\u76ee\u7684\u3067id\u5c5e\u6027\u3092\u4f7f\u3063\u3066\u3057\u307e\u3046\u30b1\u30fc\u30b9\u304c\u521d\u5fc3\u8005\u306b\u591a\u304f\u898b\u3089\u308c\u307e\u3059\u3002id\u306fCSS\u306e\u512a\u5148\u9806\u4f4d\u304c\u975e\u5e38\u306b\u9ad8\u3044\u305f\u3081\u3001\u5f8c\u304b\u3089\u5225\u306e\u30c7\u30b6\u30a4\u30f3\u3092\u4e0a\u66f8\u304d\u3057\u305f\u3044\u3068\u304d\u306b<code>!important<\/code>\u3092\u4e71\u767a\u3059\u308b\u7fbd\u76ee\u306b\u306a\u308a\u304c\u3061\u3067\u3059\u3002\u88c5\u98fe\u76ee\u7684\u3067\u306f\u57fa\u672c\u7684\u306bclass\u3092\u4f7f\u3044\u3001id\u306fJS\u5236\u5fa1\u3084\u30da\u30fc\u30b8\u5185\u30ea\u30f3\u30af\u306a\u3069\u300c\u4e00\u610f\u6027\u304c\u672c\u5f53\u306b\u5fc5\u8981\u306a\u5834\u9762\u300d\u3060\u3051\u306b\u9650\u5b9a\u3059\u308b\u306e\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">1-2. \u306a\u305cclass\u3068\u3044\u3046\u4ed5\u7d44\u307f\u304c\u5fc5\u8981\u306a\u306e\u304b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u3082\u305d\u3082\u3001\u306a\u305cHTML\u306b\u306f\u3053\u306e\u3088\u3046\u306a\u300c\u540d\u524d\u4ed8\u3051\u300d\u306e\u4ed5\u7d44\u307f\u304c\u5fc5\u8981\u306a\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u7406\u7531\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u3001<strong>HTML\uff08\u69cb\u9020\uff09\u3068CSS\uff08\u898b\u305f\u76ee\uff09\u3092\u5206\u96e2\u3059\u308b\u305f\u3081<\/strong>\u3067\u3059\u3002\u3082\u3057class\u3068\u3044\u3046\u4ed5\u7d44\u307f\u304c\u306a\u3051\u308c\u3070\u3001\u3059\u3079\u3066\u306e\u8981\u7d20\u306b\u76f4\u63a5\u30b9\u30bf\u30a4\u30eb\u3092\u66f8\u304d\u8fbc\u3080\uff08\u30a4\u30f3\u30e9\u30a4\u30f3\u30b9\u30bf\u30a4\u30eb\uff09\u3057\u304b\u306a\u304f\u3001\u540c\u3058\u30c7\u30b6\u30a4\u30f3\u306e\u30dc\u30bf\u30f3\u304c100\u500b\u3042\u308c\u3070100\u7b87\u6240\u3059\u3079\u3066\u3092\u4fee\u6b63\u3059\u308b\u5fc5\u8981\u304c\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">class\u3092\u4f7f\u3048\u3070\u3001<code>.btn<\/code>\u3068\u3044\u3046\u30b9\u30bf\u30a4\u30eb\u5b9a\u7fa9\u30921\u7b87\u6240\u66f8\u304f\u3060\u3051\u3067\u3001\u305d\u306eclass\u3092\u6301\u3064\u3059\u3079\u3066\u306e\u8981\u7d20\u306b\u4e00\u62ec\u3067\u53cd\u6620\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u304cWeb\u5236\u4f5c\u306b\u304a\u3051\u308b<strong>\u300c\u4fdd\u5b88\u6027\u300d<\/strong>\u306e\u6839\u5e79\u3067\u3042\u308a\u3001\u30b5\u30a4\u30c8\u898f\u6a21\u304c\u5927\u304d\u304f\u306a\u308b\u307b\u3069\u3053\u306e\u4ed5\u7d44\u307f\u306e\u6069\u6075\u306f\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u5f0a\u793e\u3067LP\u3092\u91cf\u7523\u3059\u308b\u969b\u3082\u3001\u3053\u306e\u300cclass\u30921\u7b87\u6240\u76f4\u305b\u3070\u5168\u4f53\u306b\u53cd\u6620\u3055\u308c\u308b\u300d\u3068\u3044\u3046\u6027\u8cea\u3092\u30d5\u30eb\u6d3b\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u30c7\u30b6\u30a4\u30f3\u306e\u7d71\u4e00\u611f\u3092\u4fdd\u3061\u306a\u304c\u3089\u9ad8\u901f\u306b\u91cf\u7523\u3067\u304d\u308b\u306e\u306f\u3001class\u3068\u3044\u3046\u4ed5\u7d44\u307f\u304c\u3042\u3063\u3066\u3053\u305d\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=css-class-basics&#038;blog_slug=css-class-basics\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=css-class-basics&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-02\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">02<\/span>\n  <span class=\"section-label\" style=\"display:block;\">HOW TO USE<\/span>\n  <span class=\"section-title\" style=\"display:block;\">class\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/span>\n  <span class=\"section-desc\">\u4ed8\u4e0e\u306e\u30eb\u30fc\u30eb\u30fb\u8907\u6570\u6307\u5b9a\u30fb\u547d\u540d\u306e\u57fa\u790e\u3092\u62bc\u3055\u3048\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">class\u306e\u7406\u5c48\u304c\u5206\u304b\u3063\u305f\u3068\u3053\u308d\u3067\u3001\u5b9f\u969b\u306e\u66f8\u304d\u65b9\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u57fa\u672c\u306e\u5f62\u306f\u3001\u5bfe\u8c61\u306e\u30bf\u30b0\u306b<code>class=\"\u30af\u30e9\u30b9\u540d\"<\/code>\u3068\u3044\u3046\u5c5e\u6027\u3092\u8ffd\u52a0\u3059\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<pre style=\"background:#1a1a1a;color:#f1f1f1;border-radius:8px;padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.7;margin:16px 0;\"><code>&lt;!-- \u57fa\u672c\u5f62 --&gt;\n&lt;p class=\"lead-text\"&gt;\u3053\u308c\u306f\u30ea\u30fc\u30c9\u6587\u3067\u3059\u3002&lt;\/p&gt;\n\n&lt;!-- \u8907\u6570\u306eclass\u3092\u4ed8\u4e0e\u3059\u308b\u5834\u5408\uff08\u534a\u89d2\u30b9\u30da\u30fc\u30b9\u533a\u5207\u308a\uff09 --&gt;\n&lt;button class=\"btn btn-primary btn-large\"&gt;\u9001\u4fe1\u3059\u308b&lt;\/button&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8a18\u306e<code>&lt;button&gt;<\/code>\u306e\u4f8b\u306e\u3088\u3046\u306b\u3001<strong>1\u3064\u306e\u8981\u7d20\u306b\u8907\u6570\u306eclass\u3092\u7a7a\u767d\u533a\u5207\u308a\u3067\u4e26\u3079\u308b<\/strong>\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u300c\u30dc\u30bf\u30f3\u306e\u57fa\u672c\u30c7\u30b6\u30a4\u30f3\uff08btn\uff09\u300d\u300c\u8272\u306e\u30d1\u30bf\u30fc\u30f3\uff08btn-primary\uff09\u300d\u300c\u30b5\u30a4\u30ba\u306e\u30d1\u30bf\u30fc\u30f3\uff08btn-large\uff09\u300d\u306e\u3088\u3046\u306b\u3001<strong>\u5f79\u5272\u3054\u3068\u306bclass\u3092\u5206\u3051\u3066\u7d44\u307f\u5408\u308f\u305b\u308b<\/strong>\u8a2d\u8a08\u3092\u53ef\u80fd\u306b\u3059\u308b\u3001\u975e\u5e38\u306b\u91cd\u8981\u306a\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2-1. class\u3092\u4ed8\u4e0e\u3059\u308b\u6d41\u308c<\/h3>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\"><strong>Step 1<\/strong><br><span style=\"font-size:12px;\">\u30b9\u30bf\u30a4\u30eb\u3092<br>\u5f53\u3066\u305f\u3044\u8981\u7d20\u3092<br>\u7279\u5b9a\u3059\u308b<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>Step 2<\/strong><br><span style=\"font-size:12px;\">class\u5c5e\u6027\u3067<br>\u540d\u524d\u3092<br>\u4ed8\u4e0e\u3059\u308b<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>Step 3<\/strong><br><span style=\"font-size:12px;\">CSS\u5074\u3067<br>.\u30af\u30e9\u30b9\u540d{}<br>\u3092\u8a18\u8ff0\u3059\u308b<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>Step 4<\/strong><br><span style=\"font-size:12px;\">\u30b9\u30bf\u30a4\u30eb\u304c<br>\u30d6\u30e9\u30a6\u30b6\u306b<br>\u53cd\u6620\u3055\u308c\u308b<\/span><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e4\u30b9\u30c6\u30c3\u30d7\u3055\u3048\u7406\u89e3\u3057\u3066\u3044\u308c\u3070\u3001class\u306e\u57fa\u672c\u64cd\u4f5c\u3067\u3064\u307e\u305a\u304f\u3053\u3068\u306f\u307b\u307c\u3042\u308a\u307e\u305b\u3093\u3002\u91cd\u8981\u306a\u306e\u306f\u3001Step 2\u3067\u4ed8\u3051\u305f\u540d\u524d\u3068Step 3\u3067\u66f8\u304f\u30bb\u30ec\u30af\u30bf\u306e<strong>\u6587\u5b57\u5217\u3092\u5b8c\u5168\u306b\u4e00\u81f4\u3055\u305b\u308b<\/strong>\u3053\u3068\u3067\u3059\u3002\u5927\u6587\u5b57\u5c0f\u6587\u5b57\u3084\u30bf\u30a4\u30d7\u30df\u30b9\u304c\u3042\u308b\u3068\u3001\u30b9\u30bf\u30a4\u30eb\u304c\u53cd\u6620\u3055\u308c\u305a\u306b\u60a9\u3080\u539f\u56e0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2-2. class\u540d\u306e\u4ed8\u3051\u65b9\u30eb\u30fc\u30eb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">class\u540d\u306f\u81ea\u7531\u306b\u6c7a\u3081\u3089\u308c\u307e\u3059\u304c\u3001\u3044\u304f\u3064\u304b\u5b88\u308b\u3079\u304d\u30eb\u30fc\u30eb\u3068\u6163\u7fd2\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u6570\u5b57\u304b\u3089\u59cb\u3081\u308b\u540d\u524d\u306f\u907f\u3051\u308b\uff08HTML\u5c5e\u6027\u5024\u3068\u3057\u3066\u306f\u66f8\u3051\u308b\u304c\u3001<code>.1box<\/code>\u306e\u3088\u3046\u306aCSS\u30bb\u30ec\u30af\u30bf\u306f\u30a8\u30b9\u30b1\u30fc\u30d7\u306a\u3057\u3067\u306f\u66f8\u3051\u305a\u4e8b\u6545\u306e\u3082\u3068\u3002<code>class=\"box1\"<\/code>\u306e\u3088\u3046\u306b\u6587\u5b57\u59cb\u307e\u308a\u306b\u3059\u308b\u306e\u304c\u7121\u96e3\uff09<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u534a\u89d2\u82f1\u6570\u5b57\u30fb\u30cf\u30a4\u30d5\u30f3\u30fb\u30a2\u30f3\u30c0\u30fc\u30b9\u30b3\u30a2\u304c\u57fa\u672c\uff08\u65e5\u672c\u8a9e\u3084\u8a18\u53f7\u306f\u907f\u3051\u308b\uff09<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u5927\u6587\u5b57\u30fb\u5c0f\u6587\u5b57\u306f\u533a\u5225\u3055\u308c\u308b\uff08<code>.Btn<\/code>\u3068<code>.btn<\/code>\u306f\u5225\u7269\u3068\u3057\u3066\u6271\u308f\u308c\u308b\uff09<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u610f\u5473\u304c\u5206\u304b\u308b\u540d\u524d\u306b\u3059\u308b\uff08<code>.a1<\/code>\u3088\u308a<code>.card-title<\/code>\u306e\u65b9\u304c\u4fdd\u5b88\u3057\u3084\u3059\u3044\uff09<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u30cf\u30a4\u30d5\u30f3\u533a\u5207\u308a\uff08\u30b1\u30d0\u30d6\u30b1\u30fc\u30b9\uff09\u304c\u696d\u754c\u6a19\u6e96\uff08<code>.mainVisual<\/code>\u3088\u308a<code>.main-visual<\/code>\uff09<\/span><\/div>\n\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:18px;\">&#128161;<\/span>\n    <strong style=\"color:#16a34a;font-size:15px;\">\u8ff7\u3063\u305f\u3089\u3053\u306e\u547d\u540d\u30d1\u30bf\u30fc\u30f3<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u300c\u5f79\u5272\uff0b\u30d1\u30fc\u30c4\u300d\u306e\u9806\u3067\u547d\u540d\u3059\u308b\u3068\u8ff7\u3044\u307e\u305b\u3093\u3002\u4f8b\uff1a<code>.header-logo<\/code>\uff08\u30d8\u30c3\u30c0\u30fc\u306e\u30ed\u30b4\uff09\u3001<code>.card-title<\/code>\uff08\u30ab\u30fc\u30c9\u306e\u30bf\u30a4\u30c8\u30eb\uff09\u3001<code>.btn-primary<\/code>\uff08\u30d7\u30e9\u30a4\u30de\u30ea\u30fc\u30dc\u30bf\u30f3\uff09\u3002\u898b\u305f\u4eba\u304c\u540d\u524d\u3060\u3051\u3067\u300c\u3069\u3053\u306e\u4f55\u304b\u300d\u3092\u63a8\u6e2c\u3067\u304d\u308b\u3053\u3068\u304c\u826f\u3044class\u540d\u306e\u6761\u4ef6\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">2-3. \u3088\u304f\u3042\u308b\u30df\u30b9\u3068\u6ce8\u610f\u70b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u521d\u5fc3\u8005\u304c\u3064\u307e\u305a\u304d\u3084\u3059\u3044\u306e\u304c\u3001<strong>class\u540d\u306e\u30b9\u30da\u30eb\u30df\u30b9\u3068\u30bf\u30b0\u3068\u306e\u6df7\u540c<\/strong>\u3067\u3059\u3002CSS\u5074\u3067<code>.btn-primery<\/code>\uff08\u6b63\u3057\u304f\u306f primary\uff09\u306e\u3088\u3046\u306b\u30bf\u30a4\u30d7\u30df\u30b9\u3092\u3059\u308b\u3068\u3001\u30a8\u30e9\u30fc\u306f\u51fa\u305a\u306b\u305f\u3060\u30b9\u30bf\u30a4\u30eb\u304c\u53cd\u6620\u3055\u308c\u306a\u3044\u305f\u3081\u3001\u539f\u56e0\u7a76\u660e\u306b\u6642\u9593\u304c\u304b\u304b\u308a\u304c\u3061\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:20px;\">&#9888;&#65039;<\/span>\n    <strong style=\"color:#dc2626;font-size:16px;\">\u30c7\u30d0\u30c3\u30b0\u306e\u57fa\u672c<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u30b9\u30bf\u30a4\u30eb\u304c\u53cd\u6620\u3055\u308c\u306a\u3044\u3068\u304d\u306f\u3001\u307e\u305a\u30d6\u30e9\u30a6\u30b6\u306e\u958b\u767a\u8005\u30c4\u30fc\u30eb\uff08F12\u30ad\u30fc\uff09\u3067\u305d\u306e\u8981\u7d20\u306b\u3042\u3066\u305f\u3044class\u304c\u5b9f\u969b\u306bHTML\u4e0a\u306b\u5b58\u5728\u3059\u308b\u304b\u3001CSS\u5074\u306e\u30bb\u30ec\u30af\u30bf\u3068\u6587\u5b57\u5217\u304c\u5b8c\u5168\u306b\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u30029\u5272\u306e\u30b1\u30fc\u30b9\u306f\u30bf\u30a4\u30d7\u30df\u30b9\u304b\u3001\u8a73\u7d30\u5ea6\uff08\u512a\u5148\u9806\u4f4d\uff09\u306e\u554f\u984c\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">class\u540d\u306e\u30bf\u30a4\u30d7\u30df\u30b9\u306f\u672c\u5f53\u306b\u3088\u304f\u3042\u308a\u307e\u3059\u3002\u79c1\u3082\u6614\u3001\u81ea\u5206\u3067\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u3044\u305f\u9803\u306f\u300c\u306a\u305c\u53cd\u6620\u3055\u308c\u306a\u3044\u3093\u3060\u300d\u306830\u5206\u60a9\u3093\u3067\u3001\u5b9f\u306f\u30cf\u30a4\u30d5\u30f3\u304c1\u3064\u629c\u3051\u3066\u3044\u305f\u3060\u3051\u3001\u3068\u3044\u3046\u3053\u3068\u304c\u4f55\u5ea6\u3082\u3042\u308a\u307e\u3057\u305f\u3002\u4eca\u306f\u305d\u306e\u3042\u305f\u308a\u306e\u30c1\u30a7\u30c3\u30af\u3082Claude Code\u306b\u4efb\u305b\u3066\u3044\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=css-class-basics&#038;blog_slug=css-class-basics\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=css-class-basics&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-03\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">03<\/span>\n  <span class=\"section-label\" style=\"display:block;\">CSS SELECTOR<\/span>\n  <span class=\"section-title\" style=\"display:block;\">CSS\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\uff1a\u30bb\u30ec\u30af\u30bf\u3068\u512a\u5148\u9806\u4f4d<\/span>\n  <span class=\"section-desc\">\u8907\u6570class\u306e\u7d44\u307f\u5408\u308f\u305b\u65b9\u3068\u3001\u8a73\u7d30\u5ea6\u306e\u30eb\u30fc\u30eb\u3092\u7406\u89e3\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">class\u306e\u57fa\u672c\u304c\u5206\u304b\u3063\u305f\u3089\u3001\u6b21\u306fCSS\u5074\u306e\u66f8\u304d\u65b9\u3092\u3082\u3046\u4e00\u6b69\u8e0f\u307f\u8fbc\u3093\u3067\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002class\u3092\u4f7f\u3063\u305f\u30bb\u30ec\u30af\u30bf\u306b\u306f\u3001\u30b7\u30f3\u30d7\u30eb\u306a1\u3064\u6307\u5b9a\u3060\u3051\u3067\u306a\u304f\u3001\u8907\u6570\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u66f8\u304d\u65b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u66f8\u304d\u65b9<\/th><th>\u610f\u5473<\/th><th>\u5177\u4f53\u4f8b<\/th><\/tr><\/thead>\n<tbody>\n<tr><td><code>.a<\/code><\/td><td>class\u306ba\u3092\u6301\u3064\u8981\u7d20\u3059\u3079\u3066<\/td><td><code>.btn { color: red; }<\/code><\/td><\/tr>\n<tr><td><code>.a.b<\/code>\uff08\u30b9\u30da\u30fc\u30b9\u306a\u3057\uff09<\/td><td>a\u3068b\u306e<strong>\u4e21\u65b9<\/strong>\u3092\u6301\u3064\u8981\u7d20<\/td><td><code>.btn.btn-large { }<\/code><\/td><\/tr>\n<tr><td><code>.a .b<\/code>\uff08\u30b9\u30da\u30fc\u30b9\u3042\u308a\uff09<\/td><td>a\u306e<strong>\u5185\u90e8\u306b\u3042\u308b<\/strong>b\u3092\u6301\u3064\u8981\u7d20\uff08\u5b50\u5b6b\u30bb\u30ec\u30af\u30bf\uff09<\/td><td><code>.card .title { }<\/code><\/td><\/tr>\n<tr><td><code>.a > .b<\/code><\/td><td>a\u306e<strong>\u76f4\u63a5\u306e\u5b50<\/strong>\u3067\u3042\u308bb\u3092\u6301\u3064\u8981\u7d20<\/td><td><code>.list > .item { }<\/code><\/td><\/tr>\n<tr><td><code>.a:hover<\/code><\/td><td>a\u306b\u30de\u30a6\u30b9\u304c\u4e57\u3063\u3066\u3044\u308b\u72b6\u614b<\/td><td><code>.btn:hover { opacity: 0.8; }<\/code><\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u30bb\u30ec\u30af\u30bf<\/strong>\uff1aCSS\u3067\u300c\u3069\u306e\u8981\u7d20\u306b\u30b9\u30bf\u30a4\u30eb\u3092\u5f53\u3066\u308b\u304b\u300d\u3092\u6307\u5b9a\u3059\u308b\u90e8\u5206\u3002<code>.\u30af\u30e9\u30b9\u540d { \u30d7\u30ed\u30d1\u30c6\u30a3: \u5024; }<\/code>\u306e\u30c9\u30c3\u30c8\u304b\u3089\u6ce2\u30ab\u30c3\u30b3\u306e\u624b\u524d\u307e\u3067\u304c\u30bb\u30ec\u30af\u30bf\u306b\u3042\u305f\u308b\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u5b50\u5b6b\u30bb\u30ec\u30af\u30bf<\/strong>\uff1a<code>.a .b<\/code>\u306e\u3088\u3046\u306b\u534a\u89d2\u30b9\u30da\u30fc\u30b9\u3067\u533a\u5207\u3063\u3066\u66f8\u304f\u30bb\u30ec\u30af\u30bf\u3002\u300ca\u3068\u3044\u3046class\u3092\u6301\u3064\u8981\u7d20\u306e\u5185\u90e8\uff08\u3069\u308c\u3060\u3051\u968e\u5c64\u304c\u6df1\u304f\u3066\u3082\u53ef\uff09\u306b\u3042\u308bb\u3068\u3044\u3046class\u3092\u6301\u3064\u8981\u7d20\u300d\u3092\u9078\u629e\u3059\u308b\u3002\u76f4\u63a5\u306e\u89aa\u5b50\u95a2\u4fc2\u3067\u306a\u304f\u3066\u3082\u3001\u5185\u90e8\u306b\u3042\u308a\u3055\u3048\u3059\u308c\u3070\u5bfe\u8c61\u306b\u306a\u308b\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">3-1. \u8a73\u7d30\u5ea6\uff08Specificity\uff09\u3068\u3044\u3046\u30eb\u30fc\u30eb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CSS\u3067\u6700\u3082\u3064\u307e\u305a\u304d\u3084\u3059\u3044\u306e\u304c\u300c<strong>\u8907\u6570\u306e\u30b9\u30bf\u30a4\u30eb\u304c\u540c\u3058\u8981\u7d20\u306b\u7af6\u5408\u3057\u305f\u3068\u304d\u3001\u3069\u3061\u3089\u304c\u512a\u5148\u3055\u308c\u308b\u304b<\/strong>\u300d\u3068\u3044\u3046\u30eb\u30fc\u30eb\u3067\u3059\u3002\u3053\u308c\u3092<strong>\u8a73\u7d30\u5ea6\uff08Specificity\uff09<\/strong>\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a73\u7d30\u5ea6\u306f\u5927\u307e\u304b\u306b\u6b21\u306e\u512a\u5148\u9806\u4f4d\u3067\u6c7a\u307e\u308a\u307e\u3059\u3002\u6570\u5b57\u304c\u5927\u304d\u3044\u307b\u3069\u5f37\u3044\u30b9\u30bf\u30a4\u30eb\u3068\u3057\u3066\u6271\u308f\u308c\u3001\u5f8c\u304b\u3089\u66f8\u3044\u305f\u30fb\u8aad\u307f\u8fbc\u3093\u3060CSS\u3067\u3042\u3063\u3066\u3082\u3001\u8a73\u7d30\u5ea6\u304c\u4f4e\u3051\u308c\u3070\u4e0a\u66f8\u304d\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u512a\u5148\u9806\u4f4d<\/th><th>\u7a2e\u985e<\/th><th>\u5177\u4f53\u4f8b<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u6700\u5f37\uff08\u539f\u5247\u52dd\u3064\uff09<\/td><td><code>!important<\/code><\/td><td><code>color: red !important;<\/code><\/td><\/tr>\n<tr><td>4\u756a\u76ee<\/td><td>\u30a4\u30f3\u30e9\u30a4\u30f3\u30b9\u30bf\u30a4\u30eb<\/td><td><code>&lt;p style=\"color:red\"&gt;<\/code><\/td><\/tr>\n<tr><td>3\u756a\u76ee<\/td><td>id \u30bb\u30ec\u30af\u30bf<\/td><td><code>#header { }<\/code><\/td><\/tr>\n<tr><td>2\u756a\u76ee<\/td><td>class\u30fb\u5c5e\u6027\u30fb\u7591\u4f3c\u30af\u30e9\u30b9<\/td><td><code>.btn { }<\/code> <code>:hover { }<\/code><\/td><\/tr>\n<tr><td>1\u756a\u76ee\uff08\u6700\u5f31\uff09<\/td><td>\u8981\u7d20\u30bb\u30ec\u30af\u30bf<\/td><td><code>p { }<\/code> <code>div { }<\/code><\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\"><strong>\u8981\u7d20\u30bb\u30ec\u30af\u30bf<\/strong><br><span style=\"font-size:12px;\">p, div, h2 \u7b49<br>\uff08\u6700\u3082\u5f31\u3044\uff09<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>class\u30bb\u30ec\u30af\u30bf<\/strong><br><span style=\"font-size:12px;\">.btn \u7b49<br>\uff08\u5b9f\u52d9\u306e\u4e3b\u6226\u5834\uff09<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>id\u30bb\u30ec\u30af\u30bf<\/strong><br><span style=\"font-size:12px;\">#header \u7b49<br>\uff08\u5f37\u3044\u30fb\u591a\u7528\u6ce8\u610f\uff09<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>!important<\/strong><br><span style=\"font-size:12px;\">\u539f\u5247\u6700\u5f37<br>\uff08\u4e71\u7528\u53b3\u7981\uff09<\/span><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u512a\u5148\u9806\u4f4d\u3092\u7406\u89e3\u3057\u3066\u3044\u306a\u3044\u3068\u3001\u300cCSS\u3092\u66f8\u3044\u305f\u306e\u306b\u53cd\u6620\u3055\u308c\u306a\u3044\u300d\u3068\u3044\u3046\u73fe\u8c61\u306b\u5fc5\u305a\u3076\u3064\u304b\u308a\u307e\u3059\u3002\u7279\u306b\u591a\u3044\u306e\u304c\u3001<strong>id\u30bb\u30ec\u30af\u30bf\u3067\u66f8\u3044\u305f\u30b9\u30bf\u30a4\u30eb\u3092\u3001\u5f8c\u304b\u3089class\u30bb\u30ec\u30af\u30bf\u3067\u4e0a\u66f8\u304d\u3057\u3088\u3046\u3068\u3057\u3066\u53cd\u6620\u3055\u308c\u306a\u3044<\/strong>\u3068\u3044\u3046\u30b1\u30fc\u30b9\u3067\u3059\u3002\u3053\u308c\u306f\u8a73\u7d30\u5ea6\u306e\u89b3\u70b9\u304b\u3089\u898b\u308c\u3070\u5f53\u7136\u306e\u6319\u52d5\u3067\u3001bug\u3067\u306f\u306a\u304f\u4ed5\u69d8\u901a\u308a\u306e\u52d5\u304d\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:20px;\">&#9888;&#65039;<\/span>\n    <strong style=\"color:#dc2626;font-size:16px;\">!important\u306e\u4f7f\u3044\u3059\u304e\u306b\u6ce8\u610f<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\"><code>!important<\/code>\u306f\u3069\u3093\u306a\u8a73\u7d30\u5ea6\u306e\u30eb\u30fc\u30eb\u3082\u5f37\u5236\u7684\u306b\u4e0a\u66f8\u304d\u3067\u304d\u308b\u6700\u7d42\u624b\u6bb5\u3067\u3059\u3002\u4fbf\u5229\u306a\u3076\u3093\u3001\u4e71\u7528\u3059\u308b\u3068\u3069\u306e\u30b9\u30bf\u30a4\u30eb\u304c\u672c\u5f53\u306b\u52b9\u3044\u3066\u3044\u308b\u306e\u304b\u8ffd\u3048\u306a\u304f\u306a\u308a\u3001\u4fdd\u5b88\u6027\u304c\u4e00\u6c17\u306b\u60aa\u5316\u3057\u307e\u3059\u3002\u57fa\u672c\u306fclass\u306e\u8a73\u7d30\u5ea6\u3060\u3051\u3067\u5b8c\u7d50\u3059\u308b\u8a2d\u8a08\u306b\u3057\u3001!important\u306f\u5916\u90e8\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4e0a\u66f8\u304d\u306a\u3069\u300c\u672c\u5f53\u306b\u4ed6\u306b\u624b\u6bb5\u304c\u306a\u3044\u3068\u304d\u300d\u3060\u3051\u306b\u9650\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u8a73\u7d30\u5ea6\u306e\u30eb\u30fc\u30eb\u306f\u6700\u521d\u3068\u3063\u3064\u304d\u306b\u304f\u3044\u3067\u3059\u304c\u3001\u300cid > class > \u8981\u7d20\u300d\u306e\u9806\u756a\u3055\u3048\u899a\u3048\u3066\u304a\u3051\u3070\u5b9f\u52d9\u306e9\u5272\u306f\u56f0\u308a\u307e\u305b\u3093\u3002\u79c1\u3082\u7d4c\u55b6\u306e\u7acb\u5834\u3067LP\u306e\u30c1\u30a7\u30c3\u30af\u3092\u3059\u308b\u3068\u304d\u3001\u3053\u306e\u512a\u5148\u9806\u4f4d\u3092\u77e5\u3063\u3066\u3044\u308b\u3060\u3051\u3067\u300c\u306a\u305c\u3053\u306e\u8272\u306b\u306a\u3089\u306a\u3044\u306e\u304b\u300d\u3092\u3059\u3050\u62c5\u5f53\u8005\u306b\u8aac\u660e\u3067\u304d\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=css-class-basics&#038;blog_slug=css-class-basics\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=css-class-basics&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-04\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">04<\/span>\n  <span class=\"section-label\" style=\"display:block;\">NAMING METHODOLOGY<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u3010\u72ec\u81ea\u3011\u5b9f\u52d9\u3067\u901a\u7528\u3059\u308bclass\u8a2d\u8a08\u30fb\u547d\u540d\u898f\u5247<\/span>\n  <span class=\"section-desc\">BEM\u30fbOOCSS\u30fbUtility-first\u3092\u6bd4\u8f03\u3057\u3066\u7406\u89e3\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u304b\u3089\u306f\u3001\u5358\u767a\u306eHTML\/CSS\u306e\u66f8\u304d\u65b9\u3092\u8d85\u3048\u3066\u3001<strong>\u300c\u30b5\u30a4\u30c8\u5168\u4f53\u3067class\u3092\u3069\u3046\u8a2d\u8a08\u3059\u308b\u304b\u300d<\/strong>\u3068\u3044\u3046\u3001\u3088\u308a\u5b9f\u52d9\u7684\u306a\u8a71\u306b\u5165\u308a\u307e\u3059\u3002\u30da\u30fc\u30b8\u6570\u304c\u5897\u3048\u3001\u8907\u6570\u4eba\u3067\u30b3\u30fc\u30c9\u3092\u89e6\u308b\u3088\u3046\u306b\u306a\u308b\u3068\u3001\u884c\u304d\u5f53\u305f\u308a\u3070\u3063\u305f\u308a\u306e\u547d\u540d\u3067\u306f\u5fc5\u305a\u7834\u7dbb\u3057\u307e\u3059\u3002\u305d\u3053\u3067\u751f\u307e\u308c\u305f\u306e\u304c\u3001\u4f53\u7cfb\u7acb\u3063\u305fclass\u8a2d\u8a08\u306e\u624b\u6cd5\uff08\u547d\u540d\u898f\u5247\uff09\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4-1. \u4ee3\u8868\u7684\u306a3\u3064\u306e\u8a2d\u8a08\u624b\u6cd5<\/h3>\n\n\n\n<table>\n<thead><tr><th>\u624b\u6cd5<\/th><th>\u8003\u3048\u65b9<\/th><th>\u4f8b<\/th><th>\u5411\u3044\u3066\u3044\u308b\u5834\u9762<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>BEM<\/td><td>Block\uff08\u584a\uff09__Element\uff08\u8981\u7d20\uff09--Modifier\uff08\u4fee\u98fe\uff09\u306e3\u5c64\u3067\u547d\u540d<\/td><td><code>.card__title--large<\/code><\/td><td>\u30c1\u30fc\u30e0\u958b\u767a\u30fb\u5927\u898f\u6a21\u30b5\u30a4\u30c8<\/td><\/tr>\n<tr><td>OOCSS<\/td><td>\u300c\u69cb\u9020\u300d\u3068\u300c\u898b\u305f\u76ee\u300d\u306eclass\u3092\u5206\u3051\u3066\u4f7f\u3044\u56de\u3059<\/td><td><code>.box<\/code> + <code>.skin-red<\/code><\/td><td>\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u4f7f\u3044\u56de\u3057\u304c\u591a\u3044\u30b5\u30a4\u30c8<\/td><\/tr>\n<tr><td>Utility-first<\/td><td>1\u3064\u306e\u5f79\u5272\u3060\u3051\u3092\u6301\u3064\u5c0f\u3055\u306aclass\u3092HTML\u5074\u3067\u7d44\u307f\u5408\u308f\u305b\u308b<\/td><td><code>.text-center<\/code> <code>.p-4<\/code><\/td><td>Tailwind CSS\u306a\u3069\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u524d\u63d0\u306e\u958b\u767a<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>BEM<\/strong>\uff1a\u300cBlock\uff08\u584a\uff09\u300d\u300cElement\uff08\u584a\u306e\u4e2d\u306e\u8981\u7d20\uff09\u300d\u300cModifier\uff08\u72b6\u614b\u3084\u7a2e\u985e\u306e\u9055\u3044\uff09\u300d\u306e3\u3064\u306e\u5358\u4f4d\u3067class\u540d\u3092\u69cb\u6210\u3059\u308b\u8a2d\u8a08\u624b\u6cd5\u3002<code>block__element--modifier<\/code>\u3068\u3044\u3046\u5f62\u5f0f\u3067\u66f8\u304f\u3002\u547d\u540d\u30eb\u30fc\u30eb\u304c\u53b3\u683c\u306a\u5206\u3001\u8ab0\u304c\u898b\u3066\u3082\u69cb\u9020\u304c\u5206\u304b\u308a\u3084\u3059\u304f\u306a\u308b\u306e\u304c\u5229\u70b9\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>Utility-first CSS<\/strong>\uff1a\u300c\u4e2d\u592e\u5bc4\u305b\u300d\u300c\u4f59\u767d\u300d\u300c\u6587\u5b57\u8272\u300d\u306a\u3069\u30011\u3064\u306e\u5f79\u5272\u3060\u3051\u3092\u6301\u3064\u6975\u5c0f\u306eclass\uff08\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30af\u30e9\u30b9\uff09\u3092\u5927\u91cf\u306b\u7528\u610f\u3057\u3001HTML\u5074\u3067\u305d\u308c\u3089\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u30c7\u30b6\u30a4\u30f3\u3092\u4f5c\u308b\u624b\u6cd5\u3002Tailwind CSS\u304c\u4ee3\u8868\u4f8b\u3002CSS\u30d5\u30a1\u30a4\u30eb\u3092\u307b\u3068\u3093\u3069\u66f8\u304b\u305a\u306b\u6e08\u3080\u53cd\u9762\u3001HTML\u5074\u306eclass\u304c\u9577\u304f\u306a\u308a\u3084\u3059\u3044\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">4-2. BEM\u306e\u5177\u4f53\u4f8b\u3067\u7406\u89e3\u3059\u308b<\/h3>\n\n\n\n<pre style=\"background:#1a1a1a;color:#f1f1f1;border-radius:8px;padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.7;margin:16px 0;\"><code>&lt;!-- BEM\u8a18\u6cd5\u306e\u4f8b\uff1a\u30ab\u30fc\u30c9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8 --&gt;\n&lt;div class=\"card\"&gt;\n  &lt;h3 class=\"card__title\"&gt;\u8a18\u4e8b\u30bf\u30a4\u30c8\u30eb&lt;\/h3&gt;\n  &lt;p class=\"card__text\"&gt;\u672c\u6587\u306e\u629c\u7c8b\u304c\u3053\u3053\u306b\u5165\u308a\u307e\u3059\u3002&lt;\/p&gt;\n  &lt;button class=\"card__button card__button--primary\"&gt;\u7d9a\u304d\u3092\u8aad\u3080&lt;\/button&gt;\n&lt;\/div&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8a18\u306e\u4f8b\u3067\u306f\u3001<code>card<\/code>\u304c\u300c\u584a\uff08Block\uff09\u300d\u3001<code>card__title<\/code>\u3084<code>card__text<\/code>\u304c\u300c\u584a\u306e\u4e2d\u306e\u8981\u7d20\uff08Element\uff09\u300d\u3001<code>card__button--primary<\/code>\u304c\u300c\u30dc\u30bf\u30f3\u306e\u7a2e\u985e\u9055\u3044\uff08Modifier\uff09\u300d\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u898f\u5247\u3092\u5b88\u308b\u3068\u3001class\u540d\u3092\u898b\u305f\u3060\u3051\u3067<strong>\u300c\u3069\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u3001\u3069\u306e\u90e8\u5206\u304b\u300d\u304c\u4e00\u76ee\u3067\u5206\u304b\u308b<\/strong>\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>Block\uff1a\u305d\u308c\u5358\u4f53\u3067\u610f\u5473\u3092\u6301\u3064\u72ec\u7acb\u3057\u305f\u30d1\u30fc\u30c4\uff08\u4f8b\uff1acard, header, form\uff09<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>Element\uff1aBlock\u306e\u5185\u90e8\u306b\u3042\u308a\u3001\u5358\u4f53\u3067\u306f\u610f\u5473\u3092\u306a\u3055\u306a\u3044\u90e8\u5206\uff08\u4f8b\uff1acard__title\uff09<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>Modifier\uff1aBlock\u30fbElement\u306e\u898b\u305f\u76ee\u3084\u72b6\u614b\u306e\u9055\u3044\uff08\u4f8b\uff1acard--highlighted\uff09<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>BEM\u306f\u8a18\u8ff0\u91cf\u304c\u5897\u3048\u308b\u304c\u3001\u5927\u898f\u6a21\u30fb\u8907\u6570\u4eba\u958b\u767a\u3067\u306f\u4e8b\u6545\u3092\u5927\u304d\u304f\u6e1b\u3089\u305b\u308b<\/span><\/div>\n\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">4-3. \u3069\u306e\u624b\u6cd5\u3092\u9078\u3076\u3079\u304d\u304b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u500b\u4eba\u306e\u5c0f\u898f\u6a21\u30b5\u30a4\u30c8\u3067\u3042\u308c\u3070\u3001BEM\u307b\u3069\u53b3\u683c\u306a\u30eb\u30fc\u30eb\u3092\u6577\u304b\u306a\u304f\u3066\u3082\u56f0\u308b\u3053\u3068\u306f\u5c11\u306a\u3044\u3067\u3057\u3087\u3046\u3002\u4e00\u65b9\u3001<strong>\u8907\u6570\u4eba\u3067\u9577\u671f\u904b\u7528\u3059\u308b\u30b5\u30a4\u30c8\u3084\u3001LP\u3092\u4f55\u5341\u672c\u3082\u91cf\u7523\u3059\u308b\u3088\u3046\u306a\u30b1\u30fc\u30b9<\/strong>\u3067\u306f\u3001\u547d\u540d\u898f\u5247\u3092\u7d71\u4e00\u3057\u3066\u304a\u304b\u306a\u3044\u3068\u3001\u534a\u5e74\u5f8c\u306b\u306f\u300c\u3053\u306eclass\u304c\u4f55\u306e\u305f\u3081\u306b\u3042\u308b\u306e\u304b\u8ab0\u306b\u3082\u5206\u304b\u3089\u306a\u3044\u300d\u72b6\u614b\u306b\u9665\u308a\u304c\u3061\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:18px;\">&#128161;<\/span>\n    <strong style=\"color:#16a34a;font-size:15px;\">\u5f0a\u793e\u3067\u306e\u5b9f\u8df5\u7684\u306a\u4f7f\u3044\u5206\u3051<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u5f0a\u793e\u3067\u306f\u3001\u30b3\u30fc\u30dd\u30ec\u30fc\u30c8\u30b5\u30a4\u30c8\u306e\u3088\u3046\u306a\u9577\u671f\u904b\u7528\u30da\u30fc\u30b8\u306fBEM\u5bc4\u308a\u306e\u547d\u540d\u3067\u69cb\u9020\u3092\u660e\u78ba\u306b\u3057\u3001LP\u306e\u3088\u3046\u306b\u91cf\u7523\u30fb\u6539\u5ec3\u304c\u591a\u3044\u30da\u30fc\u30b8\u306f\u30b7\u30f3\u30d7\u30eb\u306a\u5f79\u5272\u30d9\u30fc\u30b9\u306e\u547d\u540d\uff08<code>.hero-title<\/code>\u7b49\uff09\u306b\u7559\u3081\u3066\u3044\u307e\u3059\u3002\u30da\u30fc\u30b8\u306e\u5bff\u547d\u3068\u66f4\u65b0\u983b\u5ea6\u306b\u3088\u3063\u3066\u3001\u547d\u540d\u898f\u5247\u306e\u53b3\u683c\u3055\u3092\u8abf\u6574\u3059\u308b\u306e\u304c\u5b9f\u52d9\u7684\u306a\u30d0\u30e9\u30f3\u30b9\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:20px;\">&#9888;&#65039;<\/span>\n    <strong style=\"color:#dc2626;font-size:16px;\">\u547d\u540d\u898f\u5247\u306e\u7d71\u4e00\u3092\u6020\u308b\u3068\u3069\u3046\u306a\u308b\u304b<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u547d\u540d\u30eb\u30fc\u30eb\u3092\u6c7a\u3081\u305a\u306b\u8907\u6570\u4eba\u30fb\u8907\u6570\u671f\u9593\u3067\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u7d9a\u3051\u308b\u3068\u3001\u540c\u3058\u5f79\u5272\u306e\u30d1\u30fc\u30c4\u306b<code>.box1<\/code>\u3068<code>.card-item<\/code>\u3068<code>.item-card<\/code>\u3068\u3044\u30463\u3064\u306e\u9055\u3046\u540d\u524d\u304c\u6df7\u5728\u3059\u308b\u3001\u3068\u3044\u3063\u305f\u4e8b\u614b\u304c\u8d77\u3053\u308a\u304c\u3061\u3067\u3059\u3002\u7d50\u679c\u3068\u3057\u3066CSS\u30d5\u30a1\u30a4\u30eb\u304c\u80a5\u5927\u5316\u3057\u3001\u3069\u306eclass\u304c\u5b9f\u969b\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u304b\u8ab0\u3082\u628a\u63e1\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">BEM\u306f\u6700\u521d\u3053\u305d\u300c\u306a\u3093\u3067\u3053\u3093\u306a\u306b\u9577\u3044\u540d\u524d\u3092\u66f8\u304f\u3093\u3060\u300d\u3068\u611f\u3058\u307e\u3059\u304c\u3001\u534a\u5e74\u5f8c\u306b\u5225\u306e\u4eba\u304c\u30b3\u30fc\u30c9\u3092\u89e6\u3063\u305f\u3068\u304d\u306e\u8aad\u307f\u3084\u3059\u3055\u304c\u6bb5\u9055\u3044\u3067\u3059\u3002\u7279\u306bLP\u3092\u91cf\u7523\u3059\u308b\u5f0a\u793e\u306e\u3088\u3046\u306a\u904b\u7528\u3067\u306f\u3001\u547d\u540d\u898f\u5247\u304c\u7d71\u4e00\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3067\u4fdd\u5b88\u30b3\u30b9\u30c8\u304c\u5927\u304d\u304f\u5909\u308f\u3063\u3066\u304d\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=css-class-basics&#038;blog_slug=css-class-basics\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=css-class-basics&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-05\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">05<\/span>\n  <span class=\"section-label\" style=\"display:block;\">GENAI CASE STUDY<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u3010\u72ec\u81ea\u30c7\u30fc\u30bf\u3011GENAI\u793e\u5185\u306eHTML\/CSS\u5236\u4f5c\u5b9f\u904b\u7528<\/span>\n  <span class=\"section-desc\">Claude Code\u3067\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u696d\u52d9\u304c\u3069\u308c\u3060\u3051\u5909\u308f\u3063\u305f\u304b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u307e\u3067CSS\u306eclass\u306b\u3064\u3044\u3066\u6280\u8853\u7684\u306a\u89e3\u8aac\u3092\u3057\u3066\u304d\u307e\u3057\u305f\u304c\u3001\u5b9f\u969b\u306e\u696d\u52d9\u3067\u306f\u300cclass\u8a2d\u8a08\u3092\u7406\u89e3\u3057\u305f\u4e0a\u3067\u3001\u305d\u308c\u3092\u3069\u3046\u52b9\u7387\u7684\u306b\u624b\u3092\u52d5\u304b\u3059\u304b\u300d\u304c\u3082\u3046\u4e00\u3064\u306e\u91cd\u8981\u306a\u30c6\u30fc\u30de\u3067\u3059\u3002\u5f0a\u793e\uff08\u682a\u5f0f\u4f1a\u793eGENAI\uff09\u3067\u306f\u3001<strong>Claude Max 20x\u30d7\u30e9\u30f3\uff08\u6708\u984d$200\u30fb\u7d0430,000\u5186\uff09<\/strong>\u3092\u5951\u7d04\u3057\u3001\u30b3\u30fc\u30dd\u30ec\u30fc\u30c8\u30b5\u30a4\u30c8\u30fbLP\u30fb\u30d6\u30ed\u30b0\u8a18\u4e8b\u306e\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u542b\u3080\u5168\u793e\u696d\u52d9\u306bClaude Code\u3092\u7d44\u307f\u8fbc\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u9805\u76ee<\/th><th>\u5185\u5bb9<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u5951\u7d04\u30d7\u30e9\u30f3<\/td><td>Claude Max 20x\uff08\u6708$200 \/ \u7d0430,000\u5186\uff09<\/td><\/tr>\n<tr><td>\u5229\u7528\u958b\u59cb<\/td><td>2025\u5e74\u5f8c\u534a\u301c<\/td><\/tr>\n<tr><td>\u5bfe\u8c61\u696d\u52d9<\/td><td>\u30b3\u30fc\u30dd\u30ec\u30fc\u30c8\u30b5\u30a4\u30c8\u30fbLP\u5236\u4f5c\u3001WordPress\u8a18\u4e8b\u6295\u7a3f\u3001\u696d\u52d9\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u66f8\u304d\u6368\u3066<\/td><\/tr>\n<tr><td>\u4e3b\u306a\u5229\u7528\u30e2\u30c7\u30eb<\/td><td>Sonnet 4.6\uff08\u65e5\u5e38\u306e\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\uff09\/ Opus 4.6\uff08\u8907\u96d1\u306a\u69cb\u9020\u8a2d\u8a08\uff09<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<h3 class=\"wp-block-heading\">5-1. HTML\/CSS\u5236\u4f5c\u306b\u304b\u304b\u308b\u6642\u9593\u306e\u5909\u5316<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f0a\u793e\u306e\u958b\u767a\u696d\u52d9\u5168\u822c\uff08WordPress\u30fbLP\u5236\u4f5c\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u66f8\u304d\u6368\u3066\u3092\u542b\u3080\uff09\u306f\u3001Claude Code\u306e\u5c0e\u5165\u306b\u3088\u3063\u3066<strong>\u90fd\u5ea6\u6570\u6642\u9593\u5358\u4f4d\u306e\u524a\u6e1b<\/strong>\u304c\u808c\u611f\u3068\u3057\u3066\u51fa\u3066\u3044\u307e\u3059\u3002\u7279\u306bclass\u306e\u547d\u540d\u3084\u69cb\u9020\u8a2d\u8a08\u306f\u3001Claude Code\u306b\u300cBEM\u8a18\u6cd5\u3067\u300d\u300c\u5f79\u5272\u30d9\u30fc\u30b9\u306e\u547d\u540d\u3067\u300d\u3068\u6307\u793a\u3059\u308b\u3060\u3051\u3067\u3001\u4eba\u9593\u304c1\u3064\u305a\u3064\u8003\u3048\u308b\u3088\u308a\u901f\u304f\u3001\u304b\u3064\u4e00\u8cab\u6027\u306e\u3042\u308b\u547d\u540d\u3092\u51fa\u529b\u3057\u3066\u304f\u308c\u308b\u9818\u57df\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>Claude Code<\/strong>\uff1aAnthropic\u304c\u63d0\u4f9b\u3059\u308b\u30bf\u30fc\u30df\u30ca\u30eb\uff08\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\uff09\u4e0a\u3067\u52d5\u304fAI\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u3002HTML\u30fbCSS\u30fbJavaScript\u306e\u751f\u6210\u3060\u3051\u3067\u306a\u304f\u3001\u65e2\u5b58\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u30fb\u7de8\u96c6\u30fb\u5b9f\u884c\u307e\u3067\u3092\u81ea\u5f8b\u7684\u306b\u3053\u306a\u3059\u3002Pro\u4ee5\u4e0a\u306e\u30d7\u30e9\u30f3\u306b\u8ffd\u52a0\u6599\u91d1\u306a\u3057\u3067\u542b\u307e\u308c\u308b\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">5-2. \u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u4f5c\u696d\u304c\u3069\u3046\u5909\u308f\u3063\u305f\u304b\uff08\u6d41\u308c\u56f3\uff09<\/h3>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\"><strong>\u5f93\u6765<\/strong><br><span style=\"font-size:12px;\">\u69cb\u9020\u3092\u8003\u3048\u308b<br>\u21921\u884c\u305a\u3064<br>\u624b\u6253\u3061\u3067\u5b9f\u88c5<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u6307\u793a<\/strong><br><span style=\"font-size:12px;\">\u300cBEM\u3067<br>\u30ab\u30fc\u30c9\u30923\u679a<br>\u4e26\u3079\u3066\u300d\u3068\u4f9d\u983c<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u751f\u6210<\/strong><br><span style=\"font-size:12px;\">Claude Code\u304c<br>HTML\/CSS\u3092<br>\u4e00\u62ec\u751f\u6210<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u30ec\u30d3\u30e5\u30fc<\/strong><br><span style=\"font-size:12px;\">\u4eba\u9593\u304c<br>\u30c7\u30b6\u30a4\u30f3\u78ba\u8a8d\u30fb<br>\u5fae\u8abf\u6574<\/span><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u91cd\u8981\u306a\u306e\u306f\u3001\u3053\u306e\u6d41\u308c\u3067\u3082<strong>\u300c\u4eba\u9593\u306e\u30ec\u30d3\u30e5\u30fc\u300d\u3068\u3044\u3046\u30b9\u30c6\u30c3\u30d7\u306f\u6b8b\u308b<\/strong>\u3068\u3044\u3046\u70b9\u3067\u3059\u3002Claude Code\u304c\u751f\u6210\u3057\u305fclass\u69cb\u9020\u3084\u30c7\u30b6\u30a4\u30f3\u3092\u305d\u306e\u307e\u307e\u9d5c\u5451\u307f\u306b\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u610f\u56f3\u3057\u305f\u901a\u308a\u306e\u69cb\u9020\u30fb\u547d\u540d\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3092\u6700\u7d42\u78ba\u8a8d\u3059\u308b\u5de5\u7a0b\u306f\u5fc5\u305a\u631f\u3093\u3067\u3044\u307e\u3059\u3002\u5b8c\u5168\u306b\u81ea\u52d5\u5316\u3055\u308c\u305f\u308f\u3051\u3067\u306f\u306a\u304f\u3001\u3042\u304f\u307e\u3067\u300c\u5b9f\u88c5\u306e\u521d\u901f\u3092\u5927\u5e45\u306b\u901f\u3081\u308b\u300d\u30c4\u30fc\u30eb\u3068\u3044\u3046\u4f4d\u7f6e\u3065\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:20px;\">&#9888;&#65039;<\/span>\n    <strong style=\"color:#dc2626;font-size:16px;\">\u6570\u5024\u306e\u6ce8\u610f\u66f8\u304d<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u4e0a\u8a18\u306f\u5f0a\u793e\u306e\u808c\u611f\u30d9\u30fc\u30b9\u306e\u6570\u5024\u3067\u3042\u308a\u3001\u6848\u4ef6\u306e\u898f\u6a21\u3084\u30da\u30fc\u30b8\u69cb\u6210\u306b\u3088\u3063\u3066\u524a\u6e1b\u6642\u9593\u306f\u5909\u52d5\u3057\u307e\u3059\u3002\u3042\u304f\u307e\u3067\u300cClaude Code\u3067\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u696d\u52d9\u3092\u3069\u306e\u7a0b\u5ea6\u52b9\u7387\u5316\u3067\u304d\u308b\u304b\u300d\u306e\u53c2\u8003\u60c5\u5831\u3068\u3057\u3066\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">class\u540d\u306e\u4e00\u8cab\u6027\u3092\u4fdd\u3064\u306e\u306f\u3001\u4eba\u9593\u3060\u3051\u3067\u3084\u308d\u3046\u3068\u3059\u308b\u3068\u5730\u5473\u306b\u6d88\u8017\u3059\u308b\u4f5c\u696d\u3067\u3059\u3002Claude Code\u306b\u300c\u3053\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u547d\u540d\u898f\u5247\u306f\u3053\u308c\u3067\u3059\u300d\u3068\u4f1d\u3048\u3066\u304a\u3051\u3070\u3001\u8907\u6570\u30da\u30fc\u30b8\u306b\u307e\u305f\u304c\u3063\u3066\u3082\u4e00\u8cab\u3057\u305f\u547d\u540d\u3092\u4fdd\u3063\u3066\u304f\u308c\u308b\u306e\u3067\u3001\u30ec\u30d3\u30e5\u30fc\u306e\u8ca0\u62c5\u304c\u304b\u306a\u308a\u6e1b\u308a\u307e\u3057\u305f\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=css-class-basics&#038;blog_slug=css-class-basics\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=css-class-basics&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-06\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">06<\/span>\n  <span class=\"section-label\" style=\"display:block;\">FOR NON-ENGINEERS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u304cClaude Code\u3067CSS\u8a2d\u8a08\u3092\u4efb\u305b\u308b\u65b9\u6cd5<\/span>\n  <span class=\"section-desc\">\u30bf\u30fc\u30df\u30ca\u30eb\u3082\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u7d4c\u9a13\u3082\u4e0d\u8981\u306a\u6700\u77ed\u30eb\u30fc\u30c8<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cclass\u8a2d\u8a08\u306e\u91cd\u8981\u6027\u306f\u5206\u304b\u3063\u305f\u3051\u308c\u3069\u3001\u81ea\u5206\u306f\u30a8\u30f3\u30b8\u30cb\u30a2\u3058\u3083\u306a\u3044\u306e\u3067\u30b3\u30fc\u30c9\u306f\u66f8\u3051\u306a\u3044\u300d\u2014\u2014\u305d\u3046\u611f\u3058\u305f\u65b9\u3082\u591a\u3044\u306f\u305a\u3067\u3059\u3002\u3053\u3053\u304c\u3001\u3053\u306e\u8a18\u4e8b\u3067\u4e00\u756a\u4f1d\u3048\u305f\u3044\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<strong>2026\u5e74\u73fe\u5728\u3001class\u306e\u547d\u540d\u898f\u5247\u3084CSS\u306e\u512a\u5148\u9806\u4f4d\u3092\u81ea\u5206\u3067\u6697\u8a18\u3057\u3066\u3044\u306a\u304f\u3066\u3082\u3001Claude Code\u306b\u6307\u793a\u3059\u308c\u3070\u30d7\u30ed\u54c1\u8cea\u306e\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u4efb\u305b\u3089\u308c\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6-1. \u5b9f\u969b\u306b\u3069\u3093\u306a\u6307\u793a\u3092\u51fa\u305b\u3070\u3044\u3044\u304b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Claude Code\u306f\u300cBEM\u3067\u66f8\u3044\u3066\u300d\u300c\u8a73\u7d30\u5ea6\u304c\u7af6\u5408\u3057\u306a\u3044\u3088\u3046\u306b\u300d\u3068\u3044\u3063\u305f\u5c02\u9580\u7528\u8a9e\u3067\u306e\u6307\u793a\u3082\u3082\u3061\u308d\u3093\u7406\u89e3\u3057\u307e\u3059\u304c\u3001\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u3042\u308c\u3070\u3001\u3082\u3063\u3068\u65e5\u5e38\u7684\u306a\u8a00\u8449\u3067\u5341\u5206\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u300c\u3053\u306e\u30da\u30fc\u30b8\u306e\u30dc\u30bf\u30f3\u3092\u3001\u5168\u90e8\u540c\u3058\u30c7\u30b6\u30a4\u30f3\u3067\u7d71\u4e00\u3057\u3066\u300d\u2014 class\u8a2d\u8a08\u306e\u4e00\u8cab\u6027\u3092\u6307\u793a<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u300c\u30ab\u30fc\u30c9\u5f62\u5f0f\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u30923\u3064\u3001\u540c\u3058\u898b\u305f\u76ee\u3067\u4e26\u3079\u3066\u300d\u2014 \u7e70\u308a\u8fd4\u3057\u30d1\u30fc\u30c4\u306eclass\u5316<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u300c\u3053\u306e\u30b9\u30bf\u30a4\u30eb\u304c\u53cd\u6620\u3055\u308c\u306a\u3044\u539f\u56e0\u3092\u8abf\u3079\u3066\u76f4\u3057\u3066\u300d\u2014 \u8a73\u7d30\u5ea6\u306e\u7af6\u5408\u3092\u81ea\u52d5\u30c7\u30d0\u30c3\u30b0<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u300c\u547d\u540d\u898f\u5247\u3092BEM\u306b\u7d71\u4e00\u3057\u3066\u300d\u2014 \u65e2\u5b58\u30b3\u30fc\u30c9\u306e\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3082\u4f9d\u983c\u53ef\u80fd<\/span><\/div>\n\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:18px;\">&#128161;<\/span>\n    <strong style=\"color:#16a34a;font-size:15px;\">\u6700\u521d\u306b\u8a66\u3059\u3079\u304d\u4e00\u8a00<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u307e\u305a\u306fClaude Code\u306b\u300c\u3053\u306eHTML\u306eclass\u540d\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u6574\u7406\u3057\u3066\u300d\u3068\u8a71\u3057\u304b\u3051\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u30bf\u30fc\u30df\u30ca\u30eb\u64cd\u4f5c\u306e\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u3001\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u7248\u306e\u30c1\u30e3\u30c3\u30c8UI\u304b\u3089\u540c\u3058\u6307\u793a\u304c\u51fa\u305b\u307e\u3059\u3002\u5c02\u9580\u7528\u8a9e\u3092\u4f7f\u308f\u306a\u304f\u3066\u3082\u3001\u610f\u56f3\u3092\u6c72\u3093\u3067BEM\u76f8\u5f53\u306e\u6574\u7406\u3055\u308c\u305f\u547d\u540d\u306b\u76f4\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u300cAI\u306b\u30b3\u30fc\u30c9\u3092\u4efb\u305b\u308b\u306a\u3093\u3066\u6016\u3044\u300d\u3068\u611f\u3058\u308b\u7d4c\u55b6\u8005\u306f\u591a\u3044\u3067\u3059\u304c\u3001class\u306e\u547d\u540d\u3084CSS\u306e\u512a\u5148\u9806\u4f4d\u306e\u3088\u3046\u306b\u30eb\u30fc\u30eb\u304c\u306f\u3063\u304d\u308a\u3057\u3066\u3044\u308b\u9818\u57df\u306f\u3001\u3080\u3057\u308d\u4eba\u9593\u3088\u308a\u4e00\u8cab\u6027\u3092\u4fdd\u3061\u3084\u3059\u3044\u90e8\u5206\u3067\u3059\u3002\u6016\u304c\u3089\u305a\u306b\u3001\u307e\u305a\u306f\u5c0f\u3055\u306a1\u30da\u30fc\u30b8\u304b\u3089\u8a66\u3057\u3066\u307f\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">6-2. AI\u306b\u4efb\u305b\u3066\u3082\u54c1\u8cea\u304c\u4e0b\u304c\u3089\u306a\u3044\u7406\u7531<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cAI\u306b\u66f8\u304b\u305b\u305f\u30b3\u30fc\u30c9\u306f\u54c1\u8cea\u304c\u4f4e\u3044\u306e\u3067\u306f\u300d\u3068\u3044\u3046\u61f8\u5ff5\u3092\u6301\u3064\u65b9\u3082\u3044\u307e\u3059\u304c\u3001class\u306e\u547d\u540d\u3084\u30bb\u30ec\u30af\u30bf\u306e\u512a\u5148\u9806\u4f4d\u306e\u3088\u3046\u306a<strong>\u660e\u78ba\u306a\u30eb\u30fc\u30eb\u304c\u5b58\u5728\u3059\u308b\u9818\u57df<\/strong>\u306f\u3001\u3080\u3057\u308dAI\u304c\u6700\u3082\u5f97\u610f\u3068\u3059\u308b\u7bc4\u56f2\u3067\u3059\u3002\u4eba\u9593\u304c\u75b2\u308c\u3066\u547d\u540d\u306e\u4e00\u8cab\u6027\u304c\u5d29\u308c\u308b\u5834\u9762\u3067\u3082\u3001Claude Code\u306f\u540c\u3058\u898f\u5247\u3092\u6700\u5f8c\u307e\u3067\u9069\u7528\u3057\u7d9a\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3082\u3061\u308d\u3093\u3001\u30c7\u30b6\u30a4\u30f3\u306e\u826f\u3057\u60aa\u3057\u3084\u30d6\u30e9\u30f3\u30c9\u30a4\u30e1\u30fc\u30b8\u3068\u306e\u6574\u5408\u6027\u3068\u3044\u3063\u305f<strong>\u611f\u6027\u304c\u7d61\u3080\u5224\u65ad<\/strong>\u306f\u4eba\u9593\u306e\u30ec\u30d3\u30e5\u30fc\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u5f0a\u793e\u3067\u3082\u3001Claude Code\u304c\u751f\u6210\u3057\u305f\u30b3\u30fc\u30c9\u3092\u305d\u306e\u307e\u307e\u516c\u958b\u3059\u308b\u3053\u3068\u306f\u306a\u304f\u3001\u300c\u69cb\u9020\u30fb\u547d\u540d\u306fAI\u3001\u6700\u7d42\u7684\u306a\u898b\u305f\u76ee\u306e\u5fae\u8abf\u6574\u3068\u627f\u8a8d\u306f\u4eba\u9593\u300d\u3068\u3044\u3046\u5f79\u5272\u5206\u62c5\u3067\u904b\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\"><strong>\u6700\u521d\u306e\u4e00\u6b69<\/strong><br><span style=\"font-size:12px;\">1\u30da\u30fc\u30b8\u3060\u3051<br>Claude Code\u306b<br>\u4efb\u305b\u3066\u307f\u308b<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u52b9\u679c\u691c\u8a3c<\/strong><br><span style=\"font-size:12px;\">\u304b\u304b\u3063\u305f\u6642\u9593\u30fb<br>\u4fee\u6b63\u56de\u6570\u3092<br>\u6bd4\u3079\u308b<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u6a2a\u5c55\u958b<\/strong><br><span style=\"font-size:12px;\">\u4ed6\u306e\u30da\u30fc\u30b8\u30fb<br>LP\u306b\u3082<br>\u9069\u7528<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u5b9a\u7740<\/strong><br><span style=\"font-size:12px;\">\u547d\u540d\u898f\u5247\u3092<br>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u5168\u4f53\u3067<br>\u7d71\u4e00<\/span><\/div>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u5f0a\u793e\u3067\u306f\u300cAI\u9b3c\u7ba1\u7406\u300d\u3068\u3044\u3046\u30b5\u30fc\u30d3\u30b9\u3067\u3001Claude Code\u3092\u4f7f\u3063\u305f\u696d\u52d9\u81ea\u52d5\u5316\u306e\u8a2d\u8a08\u304b\u3089\u4f34\u8d70\u307e\u3067\u652f\u63f4\u3057\u3066\u3044\u307e\u3059\u3002CSS\u8a2d\u8a08\u306e\u3088\u3046\u306a\u5c02\u9580\u7684\u306a\u4f5c\u696d\u3082\u542b\u3081\u3066\u3001\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u65b9\u304c\u3069\u3053\u307e\u3067AI\u306b\u4efb\u305b\u3089\u308c\u308b\u304b\u3092\u4e00\u7dd2\u306b\u691c\u8a3c\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u8208\u5473\u304c\u3042\u308c\u3070\u304a\u6c17\u8efd\u306b\u3054\u76f8\u8ac7\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=css-class-basics&#038;blog_slug=css-class-basics\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=css-class-basics&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-07\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">07<\/span>\n  <span class=\"section-label\" style=\"display:block;\">CONCLUSION<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u307e\u3068\u3081<\/span>\n  <span class=\"section-desc\">class\u306e\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3059\u308c\u3070\u3001AI\u3078\u306e\u6307\u793a\u3082\u7684\u78ba\u306b\u306a\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001CSS\u306eclass\u5c5e\u6027\u306e\u57fa\u790e\u304b\u3089\u3001id\u5c5e\u6027\u3068\u306e\u9055\u3044\u3001\u30bb\u30ec\u30af\u30bf\u306e\u512a\u5148\u9806\u4f4d\u3001BEM\u306a\u3069\u306e\u547d\u540d\u898f\u5247\u3001\u305d\u3057\u3066\u5f0a\u793eGENAI\u306e\u5b9f\u904b\u7528\u30c7\u30fc\u30bf\u3068Claude Code\u306e\u6d3b\u7528\u65b9\u6cd5\u307e\u3067\u3092\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u6700\u5f8c\u306b\u30dd\u30a4\u30f3\u30c8\u3092\u632f\u308a\u8fd4\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>class\u306f\u300c\u4f7f\u3044\u56de\u305b\u308b\u5206\u985e\u30e9\u30d9\u30eb\u300d\u3001id\u306f\u300c\u30da\u30fc\u30b8\u5185\u3067\u4e00\u610f\u306a\u8b58\u5225\u5b50\u300d<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>class\u306f\u534a\u89d2\u30b9\u30da\u30fc\u30b9\u533a\u5207\u308a\u30671\u8981\u7d20\u306b\u8907\u6570\u6307\u5b9a\u3067\u304d\u308b<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>CSS\u306e\u512a\u5148\u9806\u4f4d\uff08\u8a73\u7d30\u5ea6\uff09\u306f\u300c\u8981\u7d20 < class < id < \u30a4\u30f3\u30e9\u30a4\u30f3\u30b9\u30bf\u30a4\u30eb < !important\u300d\u306e\u9806<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><code>.a.b<\/code>\uff08\u4e21\u65b9\u6301\u3064\u8981\u7d20\uff09\u3068<code>.a .b<\/code>\uff08\u5185\u90e8\u306b\u3042\u308b\u8981\u7d20\uff09\u306f\u610f\u5473\u304c\u5168\u304f\u9055\u3046<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>BEM\u30fbOOCSS\u30fbUtility-first\u306a\u3069\u3001\u898f\u6a21\u3084\u904b\u7528\u5f62\u614b\u306b\u5fdc\u3058\u305f\u547d\u540d\u898f\u5247\u3092\u9078\u3076\u3053\u3068\u304c\u91cd\u8981<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u5f0a\u793eGENAI\u3067\u306fClaude Max 20x\u3092\u5951\u7d04\u3057\u3001\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u696d\u52d9\u3092\u90fd\u5ea6\u6570\u6642\u9593\u5358\u4f4d\u3067\u524a\u6e1b\u3057\u3066\u3044\u308b<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u3082Claude Code\u306b\u65e5\u5e38\u7684\u306a\u8a00\u8449\u3067\u6307\u793a\u3059\u308c\u3070\u3001\u4e00\u8cab\u6027\u306e\u3042\u308bclass\u8a2d\u8a08\u3092\u4efb\u305b\u3089\u308c\u308b<\/span><\/div>\n\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">class\u306e\u4ed5\u7d44\u307f\u305d\u306e\u3082\u306e\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u304c\u3001\u5b9f\u52d9\u3067\u300c\u7834\u7dbb\u3057\u306a\u3044\u8a2d\u8a08\u300d\u306b\u843d\u3068\u3057\u8fbc\u3080\u306b\u306f\u3001\u512a\u5148\u9806\u4f4d\u306e\u30eb\u30fc\u30eb\u3084\u547d\u540d\u898f\u5247\u306e\u77e5\u8b58\u304c\u6b20\u304b\u305b\u307e\u305b\u3093\u3002\u305d\u3057\u3066\u305d\u306e\u77e5\u8b58\u306f\u3001<strong>\u81ea\u5206\u3067\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u4eba\u3060\u3051\u3067\u306a\u304f\u3001AI\u306b\u6307\u793a\u3092\u51fa\u3059\u7acb\u5834\u306e\u4eba\u306b\u3068\u3063\u3066\u3082\u91cd\u8981\u306a\u6b66\u5668<\/strong>\u306b\u306a\u308a\u307e\u3059\u3002\u4f55\u3092\u3069\u3046\u4efb\u305b\u308c\u3070\u3044\u3044\u304b\u304c\u5206\u304b\u3063\u3066\u3044\u308c\u3070\u3001Claude Code\u306e\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u54c1\u8cea\u306f\u5927\u304d\u304f\u5909\u308f\u3063\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">class\u306e\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3057\u305f\u4e0a\u3067Claude Code\u306b\u6307\u793a\u3092\u51fa\u3059\u3068\u3001\u300c\u306a\u3093\u3068\u306a\u304f\u7dba\u9e97\u306b\u306a\u3063\u305f\u300d\u3067\u306f\u306a\u304f\u300c\u306a\u305c\u3053\u306e\u69cb\u9020\u304c\u826f\u3044\u306e\u304b\u300d\u3092\u81ea\u5206\u306e\u8a00\u8449\u3067\u8aac\u660e\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u304c\u3001\u305d\u306e\u305f\u3081\u306e\u6700\u521d\u306e\u4e00\u6b69\u306b\u306a\u308c\u3070\u5b09\u3057\u3044\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b5\u30a4\u30c8\u5236\u4f5c\u30fb\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u696d\u52d9\u306e\u81ea\u52d5\u5316\u3092\u3001AI\u9b3c\u7ba1\u7406\u304c\u4e00\u7dd2\u306b\u8a2d\u8a08\u3057\u307e\u3059<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">class\u8a2d\u8a08\u3084CSS\u306e\u4fdd\u5b88\u6027\u306f\u3001\u30b5\u30a4\u30c8\u904b\u7528\u304c\u9577\u304f\u306a\u308b\u307b\u3069\u52b9\u3044\u3066\u304d\u307e\u3059\u3002<br>\u5f0a\u793e\u306e\u5b9f\u904b\u7528\u30ce\u30a6\u30cf\u30a6\u3092\u30d9\u30fc\u30b9\u306b\u3001Claude Code\u3092\u4f7f\u3063\u305f\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u696d\u52d9\u306e\u52b9\u7387\u5316\u3092\u500b\u5225\u306b\u3054\u76f8\u8ac7\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u300c\u30b5\u30a4\u30c8\u5236\u4f5c\u3084LP\u91cf\u7523\u3092\u3001\u3082\u3063\u3068\u5c11\u4eba\u6570\u30fb\u77ed\u6642\u9593\u3067\u56de\u3057\u305f\u3044\u300d\u3068\u3044\u3046\u65b9\u306b\u6700\u9069\u3067\u3059\u3002\u307e\u305a\u306f\u7121\u6599\u76f8\u8ac7\u3067\u3001\u8cb4\u793e\u306e\u5236\u4f5c\u30d5\u30ed\u30fc\u306e\u3069\u3053\u306bClaude Code\u3092\u7d44\u307f\u8fbc\u3081\u308b\u304b\u4e00\u7dd2\u306b\u898b\u3064\u3051\u307e\u3057\u3087\u3046\u3002<\/div>\n<\/div>\n\n\n\n<div style=\"background:#fff;border:2px solid #eee;border-radius:16px;padding:32px 20px;margin:48px 0 16px;\">\n  <p style=\"text-align:center;font-size:13px;font-weight:700;color:#dc2626;letter-spacing:2px;margin:0 0 12px;\">NEXT STEP<\/p>\n  <p style=\"text-align:center;font-size:22px;font-weight:800;line-height:1.5;color:#1a1a1a;margin:0 0 24px;\">\u3053\u306e\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u3001\u3042\u306a\u305f\u306e\u30d3\u30b8\u30cd\u30b9\u3067<br>\u5b9f\u8df5\u3057\u3066\u307f\u307e\u305b\u3093\u304b\uff1f<\/p>\n  <div style=\"display:flex;gap:16px;flex-wrap:wrap;justify-content:center;\">\n    <div style=\"flex:1 1 300px;max-width:560px;background:#fafafa;border:1px solid #eee;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;\">\n      <img src=\"https:\/\/genai-ai.co.jp\/img\/flagship-onikanri.png\" alt=\"AI\u9b3c\u7ba1\u7406 \u2014 Claude Code\u5c0e\u5165\u652f\u63f4\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\" loading=\"lazy\" decoding=\"async\" style=\"width:100%;height:auto;aspect-ratio:16\/9;object-fit:cover;display:block;\">\n      <div style=\"padding:20px 20px 24px;display:flex;flex-direction:column;flex:1;\">\n        <p style=\"font-size:13px;color:#dc2626;font-weight:700;margin:0 0 8px;\">AI\u6d3b\u7528\u3092\u81ea\u793e\u3067\u56de\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u305f\u3044\u65b9\u3078<\/p>\n        <p style=\"font-size:20px;font-weight:800;color:#1a1a1a;margin:0 0 12px;\">AI\u9b3c\u7ba1\u7406<\/p>\n        <p style=\"font-size:14px;color:#555;margin:0 0 20px;line-height:1.7;\">Claude Code\u30fbCowork\u5c0e\u5165\u652f\u63f4\u304b\u3089\u696d\u52d9\u8a2d\u8a08\u30fb\u793e\u5185\u6d78\u900f\u307e\u3067\u5b9f\u8df5\u30d9\u30fc\u30b9\u3067\u4f34\u8d70\u3002\u300c\u81ea\u793e\u3067\u56de\u305b\u308b\u7d44\u7e54\u300d\u309290\u65e5\u3067\u4f5c\u308b\u7d4c\u55b6\u8005\u5411\u3051\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3002<\/p>\n        <div style=\"text-align:center;margin-top:auto;\">\n          <a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=article&utm_campaign=css-class-basics&utm_content=next-step-cta\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#dc2626;color:#fff;font-weight:700;font-size:15px;padding:14px 32px;border-radius:30px;text-decoration:none;\">AI\u9b3c\u7ba1\u7406\u3092\u8a73\u3057\u304f\u898b\u308b \u2192<\/a>\n        <\/div>\n      <\/div>\n    <\/div>\n    <div style=\"flex:1 1 300px;max-width:560px;background:#fafafa;border:1px solid #eee;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;\">\n      <img src=\"https:\/\/genai-ai.co.jp\/img\/flagship-aibpo.png\" alt=\"AIBPO by AI\u9b3c\u7ba1\u7406 \u2014 \u5b9a\u578b\u696d\u52d9\u306e\u4e38\u3054\u3068\u4ee3\u884c\" loading=\"lazy\" decoding=\"async\" style=\"width:100%;height:auto;aspect-ratio:16\/9;object-fit:cover;display:block;\">\n      <div style=\"padding:20px 20px 24px;display:flex;flex-direction:column;flex:1;\">\n        <p style=\"font-size:13px;color:#dc2626;font-weight:700;margin:0 0 8px;\">\u696d\u52d9\u3092\u4e38\u3054\u3068\u4efb\u305b\u305f\u3044\u65b9\u3078<\/p>\n        <p style=\"font-size:20px;font-weight:800;color:#1a1a1a;margin:0 0 12px;\">AIBPO by AI\u9b3c\u7ba1\u7406<\/p>\n        <p style=\"font-size:14px;color:#555;margin:0 0 20px;line-height:1.7;\">\u8acb\u6c42\u51e6\u7406\u30fb\u30c7\u30fc\u30bf\u5165\u529b\u30fb\u554f\u3044\u5408\u308f\u305b\u5bfe\u5fdc\u306a\u3069\u306e\u5b9a\u578b\u696d\u52d9\u3092\u3001AI\u00d7\u4eba\u306e\u54c1\u8cea\u7ba1\u7406\u4f53\u5236\u3067\u4e38\u3054\u3068\u4ee3\u884c\u3002\u3044\u307e\u306e\u30b3\u30b9\u30c8\u306e75%\u76ee\u5b89\u3067\u3001\u65e5\u3005\u306f\u6210\u679c\u7269\u3092\u627f\u8a8d\u3059\u308b\u3060\u3051\u3002<\/p>\n        <div style=\"text-align:center;margin-top:auto;\">\n          <a href=\"https:\/\/genai-ai.co.jp\/ai-kanri\/ai-bpo\/?utm_source=blog&utm_medium=article&utm_campaign=css-class-basics&utm_content=next-step-cta-bpo\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#dc2626;color:#fff;font-weight:700;font-size:15px;padding:14px 32px;border-radius:30px;text-decoration:none;\">AIBPO\u3092\u8a73\u3057\u304f\u898b\u308b \u2192<\/a>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Q. class\u3068id\u306f\u3069\u3061\u3089\u3092\u512a\u5148\u3057\u3066\u4f7f\u3046\u3079\u304d\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u30c7\u30b6\u30a4\u30f3\u3092\u5f53\u3066\u308b\u76ee\u7684\u3067\u3042\u308c\u3070\u57fa\u672c\u7684\u306bclass\u3092\u4f7f\u3046\u306e\u304c\u5b89\u5168\u3067\u3059\u3002class\u306f\u4f55\u5ea6\u3067\u3082\u4f7f\u3044\u56de\u305b\u308b\u305f\u3081\u3001\u540c\u3058\u30c7\u30b6\u30a4\u30f3\u306e\u30d1\u30fc\u30c4\u304c\u5897\u3048\u3066\u3082\u4fdd\u5b88\u304c\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002id\u306f\u30da\u30fc\u30b8\u5185\u3067\u4e00\u610f\u306a\u8981\u7d20\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\uff08\u30da\u30fc\u30b8\u5185\u30ea\u30f3\u30af\u306e\u98db\u3073\u5148\u3084\u3001JavaScript\u30671\u3064\u306e\u8981\u7d20\u3060\u3051\u3092\u72d9\u3063\u3066\u64cd\u4f5c\u3057\u305f\u3044\u5834\u5408\uff09\u306b\u9650\u5b9a\u3057\u3066\u4f7f\u3046\u306e\u304c\u5b9f\u52d9\u4e0a\u306e\u5b9a\u77f3\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. 1\u3064\u306e\u8981\u7d20\u306b\u8907\u6570\u306eclass\u3092\u4ed8\u3051\u308b\u3068\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u534a\u89d2\u30b9\u30da\u30fc\u30b9\u3067\u533a\u5207\u3063\u3066\u8907\u6570\u306eclass\u540d\u3092\u66f8\u304f\u3068\u3001\u305d\u306e\u8981\u7d20\u306f\u3059\u3079\u3066\u306eclass\u306e\u30b9\u30bf\u30a4\u30eb\u3092\u540c\u6642\u306b\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070<code>class=\"btn btn-primary\"<\/code>\u3067\u3042\u308c\u3070\u3001<code>.btn<\/code>\u306e\u30b9\u30bf\u30a4\u30eb\u3068<code>.btn-primary<\/code>\u306e\u30b9\u30bf\u30a4\u30eb\u306e\u4e21\u65b9\u304c\u9069\u7528\u3055\u308c\u3001\u7af6\u5408\u3059\u308b\u90e8\u5206\u306f\u8a73\u7d30\u5ea6\u304c\u540c\u3058\u5834\u5408\u306b\u9650\u308a\u5f8c\u304b\u3089\u66f8\u304b\u308c\u305f\u65b9\u304c\u512a\u5148\u3055\u308c\u307e\u3059\u3002\u8a73\u7d30\u5ea6\u304c\u7570\u306a\u308b\u5834\u5408\u306f\u3001\u8a18\u8ff0\u9806\u306b\u304b\u304b\u308f\u3089\u305a\u8a73\u7d30\u5ea6\u304c\u9ad8\u3044\u65b9\u304c\u512a\u5148\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. CSS\u3092\u66f8\u3044\u305f\u306e\u306b\u30b9\u30bf\u30a4\u30eb\u304c\u53cd\u6620\u3055\u308c\u306a\u3044\u306e\u306f\u306a\u305c\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u4e3b\u306a\u539f\u56e0\u306f3\u3064\u3042\u308a\u307e\u3059\u30021\u3064\u76ee\u306fclass\u540d\u306e\u30bf\u30a4\u30d7\u30df\u30b9\uff08HTML\u5074\u3068CSS\u5074\u3067\u6587\u5b57\u5217\u304c\u4e00\u81f4\u3057\u3066\u3044\u306a\u3044\uff09\u30012\u3064\u76ee\u306f\u8a73\u7d30\u5ea6\u306e\u7af6\u5408\uff08id\u30bb\u30ec\u30af\u30bf\u306a\u3069\u512a\u5148\u9806\u4f4d\u304c\u9ad8\u3044\u5225\u306e\u30b9\u30bf\u30a4\u30eb\u306b\u4e0a\u66f8\u304d\u3055\u308c\u3066\u3044\u308b\uff09\u30013\u3064\u76ee\u306fCSS\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u9806\u3084\u8a18\u8ff0\u9806\u306e\u8aa4\u308a\u3067\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u306e\u958b\u767a\u8005\u30c4\u30fc\u30eb\u3067\u5b9f\u969b\u306b\u9069\u7528\u3055\u308c\u3066\u3044\u308b\u30b9\u30bf\u30a4\u30eb\u3092\u78ba\u8a8d\u3059\u308b\u3068\u539f\u56e0\u304c\u7279\u5b9a\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. BEM\u306e\u3088\u3046\u306a\u547d\u540d\u898f\u5247\u306f\u500b\u4eba\u30b5\u30a4\u30c8\u3067\u3082\u4f7f\u3046\u3079\u304d\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u500b\u4eba\u306e\u5c0f\u898f\u6a21\u30b5\u30a4\u30c8\u3067\u3042\u308c\u3070\u3001BEM\u307b\u3069\u53b3\u683c\u306a\u30eb\u30fc\u30eb\u304c\u306a\u304f\u3066\u3082\u5927\u304d\u306a\u554f\u984c\u306b\u306f\u306a\u308a\u306b\u304f\u3044\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u30da\u30fc\u30b8\u6570\u304c\u5897\u3048\u305f\u308a\u5c06\u6765\u7684\u306b\u30c1\u30fc\u30e0\u3067\u904b\u7528\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u306a\u3089\u3001\u6700\u521d\u304b\u3089\u300c\u5f79\u5272\u304c\u5206\u304b\u308b\u540d\u524d\u3092\u30cf\u30a4\u30d5\u30f3\u533a\u5207\u308a\u3067\u7d71\u4e00\u3059\u308b\u300d\u7a0b\u5ea6\u306e\u3086\u308b\u3044\u30eb\u30fc\u30eb\u3060\u3051\u3067\u3082\u6c7a\u3081\u3066\u304a\u304f\u3068\u3001\u5f8c\u3005\u306e\u4fdd\u5b88\u304c\u304b\u306a\u308a\u697d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. Claude Code\u306bCSS\u8a2d\u8a08\u3092\u4efb\u305b\u3066\u3082\u3001\u30c7\u30b6\u30a4\u30f3\u306e\u4e00\u8cab\u6027\u306f\u4fdd\u305f\u308c\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u4fdd\u305f\u308c\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002Claude Code\u306f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u5185\u306e\u65e2\u5b58\u306eclass\u540d\u3084\u547d\u540d\u898f\u5247\u3092\u8aad\u307f\u53d6\u3063\u305f\u4e0a\u3067\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3067\u304d\u308b\u305f\u3081\u3001\u4eba\u9593\u304c\u75b2\u308c\u3066\u547d\u540d\u304c\u3076\u308c\u3066\u3057\u307e\u3046\u5834\u9762\u3067\u3082\u3001\u540c\u3058\u30eb\u30fc\u30eb\u3092\u6700\u5f8c\u307e\u3067\u4e00\u8cab\u3057\u3066\u9069\u7528\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30d6\u30e9\u30f3\u30c9\u30a4\u30e1\u30fc\u30b8\u306b\u95a2\u308f\u308b\u611f\u6027\u7684\u306a\u5224\u65ad\u306f\u4eba\u9593\u306e\u30ec\u30d3\u30e5\u30fc\u304c\u5fc5\u8981\u3067\u3001\u751f\u6210\u3055\u308c\u305f\u5185\u5bb9\u3092\u305d\u306e\u307e\u307e\u516c\u958b\u3059\u308b\u3053\u3068\u306f\u63a8\u5968\u3057\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. CSS\u3084\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u77e5\u8b58\u304c\u5168\u304f\u306a\u304f\u3066\u3082Claude Code\u306f\u4f7f\u3048\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u4f7f\u3048\u307e\u3059\u3002\u5c02\u9580\u7528\u8a9e\uff08BEM\u3084\u8a73\u7d30\u5ea6\u306a\u3069\uff09\u3092\u77e5\u3089\u306a\u304f\u3066\u3082\u3001\u300c\u3053\u306e\u30dc\u30bf\u30f3\u306e\u30c7\u30b6\u30a4\u30f3\u3092\u5168\u90e8\u63c3\u3048\u3066\u300d\u3068\u3044\u3063\u305f\u65e5\u5e38\u7684\u306a\u8a00\u8449\u3067\u306e\u6307\u793a\u3067\u610f\u56f3\u3092\u6c72\u3093\u3067\u5b9f\u88c5\u3057\u3066\u304f\u308c\u307e\u3059\u30022026\u5e74\u306b\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u305f\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u7248\u3067\u3042\u308c\u3070\u30bf\u30fc\u30df\u30ca\u30eb\u64cd\u4f5c\u3082\u4e0d\u8981\u3067\u3001\u30c1\u30e3\u30c3\u30c8\u611f\u899a\u3067\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u4f5c\u696d\u3092\u4f9d\u983c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. Utility-first\uff08Tailwind CSS\u306a\u3069\uff09\u3068BEM\u306f\u3069\u3061\u3089\u304c\u512a\u308c\u3066\u3044\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u3069\u3061\u3089\u304c\u512a\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u3088\u308a\u3001\u76ee\u7684\u304c\u7570\u306a\u308a\u307e\u3059\u3002Utility-first\u306fCSS\u30d5\u30a1\u30a4\u30eb\u3092\u307b\u3068\u3093\u3069\u66f8\u304b\u305a\u306bHTML\u5074\u3060\u3051\u3067\u5b8c\u7d50\u3055\u305b\u305f\u3044\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u5411\u304d\u3001BEM\u306f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5358\u4f4d\u3067\u69cb\u9020\u3092\u660e\u78ba\u306b\u3057\u305f\u3044\u3001\u8907\u6570\u4eba\u3067\u306e\u30c1\u30fc\u30e0\u958b\u767a\u5411\u304d\u3067\u3059\u3002\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3084\u30c1\u30fc\u30e0\u306e\u958b\u767a\u30b9\u30bf\u30a4\u30eb\u306b\u5408\u308f\u305b\u3066\u9078\u3076\u306e\u304c\u73fe\u5b9f\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<script 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\"1\u3064\u306e\u8981\u7d20\u306b\u8907\u6570\u306eclass\u3092\u4ed8\u3051\u308b\u3068\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u534a\u89d2\u30b9\u30da\u30fc\u30b9\u3067\u533a\u5207\u3063\u3066\u8907\u6570\u306eclass\u540d\u3092\u66f8\u304f\u3068\u3001\u305d\u306e\u8981\u7d20\u306f\u3059\u3079\u3066\u306eclass\u306e\u30b9\u30bf\u30a4\u30eb\u3092\u540c\u6642\u306b\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070<code>class=\\\"btn btn-primary\\\"<\/code>\u3067\u3042\u308c\u3070\u3001<code>.btn<\/code>\u306e\u30b9\u30bf\u30a4\u30eb\u3068<code>.btn-primary<\/code>\u306e\u30b9\u30bf\u30a4\u30eb\u306e\u4e21\u65b9\u304c\u9069\u7528\u3055\u308c\u3001\u7af6\u5408\u3059\u308b\u90e8\u5206\u306f\u8a73\u7d30\u5ea6\u304c\u540c\u3058\u5834\u5408\u306b\u9650\u308a\u5f8c\u304b\u3089\u66f8\u304b\u308c\u305f\u65b9\u304c\u512a\u5148\u3055\u308c\u307e\u3059\u3002\u8a73\u7d30\u5ea6\u304c\u7570\u306a\u308b\u5834\u5408\u306f\u3001\u8a18\u8ff0\u9806\u306b\u304b\u304b\u308f\u3089\u305a\u8a73\u7d30\u5ea6\u304c\u9ad8\u3044\u65b9\u304c\u512a\u5148\u3055\u308c\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"CSS\u3092\u66f8\u3044\u305f\u306e\u306b\u30b9\u30bf\u30a4\u30eb\u304c\u53cd\u6620\u3055\u308c\u306a\u3044\u306e\u306f\u306a\u305c\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": 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